anunoy@chromium.org chrome-counter-abuse-alerts@google.com The number of extensions that were blocklisted when already installed, grouped by Extension::Location. Logged when ExtensionService blockists and unloads an installed extension. anunoy@chromium.org chrome-counter-abuse-alerts@google.com The number of extensions that have been blocked from installing grouped by Extension::Location. Logged when ExtensionService refuses to install a blocklisted extension. anunoy@chromium.org chrome-counter-abuse-alerts@google.com The number of extensions that have been silently installed in a blocklisted state, grouped by Extension::Location. Logged when ExtensionService installs a blocklisted extension without blocking it (ExtensionBlacklist.BlockCRX would be logged otherwise). Typically this will be when a user has a blocklisted extension synced. anunoy@chromium.org chrome-counter-abuse-alerts@google.com The number of extensions that were unblocklisted when installed, grouped by Extension::Location. Logged when ExtensionService unblocklists and loads a blocklisted extension. lazyboy@chromium.org extensions-core@chromium.org The time taken to create the computed_hashes.json file for an extension. This happens once for each extension after we get signed values of the expected root node of a tree hashes for each file from the webstore; we then compute the individual block level hashes of the actual files and cache them in computed_hashes.json (assuming we don't detect any mismatches). lazyboy@chromium.org The time taken in computation (hashing actual bytes read and comparing against expected computed hashes values) during an extension resource load. Warning: This metric may include reports from clients with low-resolution clocks (i.e. on Windows, ref. |TimeTicks::IsHighResolution()|). Such reports will cause this metric to have an abnormal distribution. When considering revising this histogram, see UMA_HISTOGRAM_CUSTOM_MICROSECONDS_TIMES for the solution. Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The cause for the failure in the setIcon() extension API function. This is temporary logging to help track down the cause of a crash. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions on a page that wanted to execute a script, required explicit user consent, and were denied permission. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions on a page that wanted to execute a script, required explicit user consent, and were granted permission. Code removed 2023/06. dbertoni@chromium.org extensions-core@chromium.org The number of alarms loaded from storage when an extension is loaded. benwells@chromium.org dominickn@chromium.org tapted@chromium.org The number of times v1 apps are launched grouped by extension_misc::AppLaunchBuckets. See also Apps.AppLaunch for v2 apps. Note this was changed in 2023-02 to no longer count web app launches. benwells@chromium.org cylee@chromium.org The number of times apps are launched grouped by extensions::AppLaunchSource. lazyboy@chromium.org A platform app ended up in a regular tab either by the app page or its background page. Note that this happens unexpectedly right now and we wish to track its usage before removing the supporting code. benwells@chromium.org tapted@chromium.org The number of apps loaded on profile open time grouped by Extension::Location. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extension apps launched grouped by extensions::LaunchType. From 2022-09 this no longer includes web app launches. Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The extension install location of an extension that Chrome attempted to add, but failed because it would downgrade the version. Tracking for https://crbug.com/810799. fdoray@chromium.org catan-team@chromium.org Recorded when a background host is created for an extension. The value indicates for which extension the host was created. The breakdown of extensions that make up the "Other extension" bucket can be derived from the LoadCountsPerTopLevelDocument UKM event. To compare UKM event counts with UMA sample counts, use this formula: count of UKM events for a given extension * count of samples in the "Other extension" bucket of this histogram / count of UKM events for all extensions Extensions bundled with Chrome have dedicated values in this histogram because they are not synced and therefore not reported through UKM. rdevlin.cronin@chromium.org extensions-core@chromium.org The time taken for an extension's persistent background page to load its initial URL. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The type (if any) of background page the extension has. Recorded for installed extensions on profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The type (if any) of background page the extension has. Recorded for installed extensions on profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of times each Extension function call sends a bad message, killing the renderer. This may indicate a bug in that API's implementation on the renderer. Note a similar, aggregate metric is BadMessageTerminate_EFD which counts the number of bad messages that are sent overall. rdevlin.cronin@chromium.org extensions-core@chromium.org The reason a valid ExtensionSyncData could not be parsed from a SyncData received from sync. Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The elapsed time to create a new full instance of an extension API's bindings using native bindings. Warning: This metric may include reports from clients with low-resolution clocks (i.e. on Windows, ref. |TimeTicks::IsHighResolution()|). Such reports will cause this metric to have an abnormal distribution. When considering revising this histogram, see UMA_HISTOGRAM_CUSTOM_MICROSECONDS_TIMES for the solution. Replaced by WebApp.LaunchContainer in M113. phillis@chromium.org benwells@chromium.org dominickn@chromium.org Records the container used for a web app launch, when the app is launched (eg. via UI surfaces or intents). Not recorded when the web app is navigated to via URL. Replaced by WebApp.LaunchSource in M113. phillis@chromium.org benwells@chromium.org dominickn@chromium.org The number of times web apps are launched, grouped by extensions::AppLaunchSource. The equivalent histogram on Android is called Launch.HomeScreenSource. kelvinjiang@chromium.org extensions-core@chromium.org The size, in KB, of a content script that is loaded successfully from a file. Recorded when the content of a user script object is set. kelvinjiang@chromium.org extensions-core@chromium.org The size, in KB, of all newly loaded dynamic content scripts for one extension. Recorded when a script load containing at least one new dynamic content script finishes. kelvinjiang@chromium.org extensions-core@chromium.org The size, in KB, of all newly loaded manifest content scripts for one extension. Recorded when a script load containing at least one new manifest content script finishes. kelvinjiang@chromium.org extensions-core@chromium.org Logged when at least one of an extension's dynamic content scripts is retrieved from the StateStore and the script's id is not prefixed, so a prefix will be added, since content script Objects should have a prefix to their ids to indicate their source. Will be removed if this histogram is not emitted for an extended period of time. vkovalova@google.com burunduk@chromium.org lazyboy@chromium.org rdevlin.cronin@chromium.org extensions-core@chromium.org Whether or not computed_hashes.json file was successfully generated and written during extension installation. Recorded during installation of an extension if hashes computing was requested for this specifix extension. Hashes computing on installation is used for off-store policy-based extensions since we need them to be checked against corruption and cannot use Chrome Web Store for source of hashes. vkovalova@google.com burunduk@chromium.org lazyboy@chromium.org rdevlin.cronin@chromium.org extensions-core@chromium.org The time taken to successfully create the computed_hashes.json file for an extension upon installation. The histogram is collected with &Extensions.ContentVerification.ComputeHashesOnInstallResult& (in case of success). vkovalova@google.com burunduk@chromium.org lazyboy@chromium.org rdevlin.cronin@chromium.org extensions-core@chromium.org Error info for fetching verified_contents.json. Recorded when the file wasn't available locally and we failed to fetch it from network. Note that OK may also be reported in some cases, for example, when file was successfully fetched, but is incorrect. vkovalova@google.com lazyboy@chromium.org rdevlin.cronin@chromium.org extensions-core@chromium.org Whether or not fetching verified_contents.json succeeded. Recorded when the file wasn't available locally and we needed to fetch it from network. Warning: this histogram was expired from 2022-02-01 to 2022-09-22; data may be missing. lazyboy@chromium.org rdevlin.cronin@chromium.org Time spent by ContentVerifier for a request to create a ContentHash instance. Recorded during an extension load completion or during an on demand content verification that was triggered by ContentVerifyJob. rdevlin.cronin@chromium.org src/extensions/OWNERS Records the action taken by the user from the extension icon context menu. Obsolete in M100. ydago@chromium.org extensions-core@chromium.org Records the manifest location of a corrupted extension that will be reinstalled silently. Fires when we suspect corruption in an extension and begin the process of reinstalling it. lazyboy@chromium.org rockot@chromium.org extensions-core@chromium.org The reason why an extension was detected to be corrupted. Recorded each time an extension is disabled due to corruption detection. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). jlulejian@chromium.org extensions-core@chromium.org Logged once on profile open, this is the value of a counter that is incremented anytime we disable a corrupted extension because its content didn't match an expected content hash. jlulejian@chromium.org extensions-core@chromium.org Logged once on profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed. This is the value of a counter that is incremented anytime we disable a corrupted extension because its content didn't match an expected content hash. vkovalova@google.com burunduk@chromium.org lazyboy@chromium.org poromov@chromium.org extensions-core@chromium.org Fires when we suspect corruption in an enterprise policy forced install extension and begin the process of reinstalling it, saving reason of such suspection. Compare to CorruptPolicyExtensionResolved to judge success rate. Note that if extension was not reinstalled in the session when corruption was found, it will be detected again (possible several times, every session start will trigger a detection until the extension will be fixed), but as CORRUPTION_DETECTED_IN_PRIOR_SESSION. vkovalova@google.com burunduk@chromium.org lazyboy@chromium.org extensions-core@chromium.org managed-devices@google.com Fires when we've successfully resinstalled a corrupt enterprise policy force-installed extension, with a value indicating how long it took end-to-end to complete the reinstall (including download time). emiliapaz@chromium.org extensions-core@chromium.org Height of the window created via chrome.windows.create. emiliapaz@chromium.org extensions-core@chromium.org Width of the window created via chrome.windows.create. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Records whether the overall extension metadata fetch from the Chrome Web Store (CWS) succeeded or not. This is recorded once for a fetch (which can include multiple network requests). Metadata fetches occur periodically (default period is 24 hours). But they can also occur on-demand, for example, when new extensions are installed. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Records whether the extension metadata retrieved from the Chrome Web Store (CWS) by the latest fetch is different from that currently saved. This difference can result from store metadata changing, for example an extension getting unpublished. Metadata is also changed when data for newly installed extensions is retrieved for the first time. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Records the network result for an individual network request within a metadata fetch. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Counts how many retries were needed to successfully complete an individual request within a metadata fetch. This is emitted only for a successful request. Requests are made in batches at every fetch interval (default is 24 hours). anunoy@chromium.org chrome-counter-abuse-alerts@google.com Records the number of individual network requests made to retrieve metadata for all installed extensions. Each request is limited to a small number of extension ids (default is 3) so multiple requests are necessary when the number of installed extensions is greater than the per-request limit. This histogram is emitted before sending the first request in a fetch. It is recorded regardless of whether the fetch succeeds or fails. dmurph@chromium.org pwnall@chromium.org The result of an open attempt to an Extensions database. {ExtensionsDatabaseOpen} ghazale@chromium.org extensions-core@chromium.org Reports whether the debugger API is called while the user has extensions developer mode enabled. This excludes extensions installed by the enterprise policy and component extensions. The stat is emitted when the debugger.attach extension function is called. rdevlin.cronin@chromium.org src/extensions/OWNERS Number of calls to the declarative API extension functions. This includes the declarativeContent and declarativeWebRequest APIs. Emitted when the extension function is called. kelvinjiang@chromium.org extensions-core@chromium.org Number of times a declarative content action is created within an extension. Emitted when a new declarative content action is created. kelvinjiang@chromium.org src/extensions/OWNERS Measures the time taken to load a single indexed ruleset in the browser process for an extension. This includes reading the indexed ruleset file and verifying it. Emitted whenever a single file-backed extension ruleset is loaded. kelvinjiang@chromium.org src/extensions/OWNERS Time taken to evaluate the before-request action for a network request for a single extension ruleset. Emitted for each network request that is visible to the extension. This is only emitted for users with high resolution clocks. kelvinjiang@chromium.org src/extensions/OWNERS Time taken to evaluate the action to take for the network request as per the Declarative Net Request API. This includes the time taken to evaluate all the extension rulesets. Emitted for non-sensitive network requests seen by the Extension System when there is at least one active extension ruleset. This is only emitted for users with high resolution clocks. lazyboy@chromium.org src/extensions/OWNERS Time taken to index and persist to disk, the deserialized json rules provided by an extension manifest for the Declarative Net Request API. This is emitted whenever a packaged extension with a declarative ruleset is installed or updated. kelvinjiang@chromium.org src/extensions/OWNERS Logs whether a regex rule wasn't indexed since it exceeded the per-rule memory limit. Emitted for every regex rule an extension adds. kelvinjiang@chromium.org src/extensions/OWNERS Records the result of loading an extension ruleset for the Declarative Net Request API. Emitted whenever a single extension ruleset is loaded. kelvinjiang@chromium.org src/extensions/OWNERS The number of enabled indexed declarative rules provided by an extension manifest for the Declarative Net Request API. This is emitted whenever a packaged extension with a declarative ruleset is installed or updated. rdevlin.cronin@chromium.org src/extensions/OWNERS Indicates the result of reading the dynamic JSON rules for an extension from the disk. Logged whenever an extension calls the getDynamicRules extension function or when it updates the dynamic rules through a call to addDynamicRules or removeDynamicRules. Note: this histogram was expired from 2023-06-01 to 2023-09-01; data may be missing. rdevlin.cronin@chromium.org src/extensions/OWNERS The time taken to evaluate regex rules for a single declarativeNetRequest ruleset where the ruleset has {RegexRulesetSize}. Emitted once per ruleset per evaluated request. This is recorded only for clients with high-resolution clocks. rdevlin.cronin@chromium.org src/extensions/OWNERS For a single declarativeNetRequest ruleset, the percent of the total amount of time spent on evaluating regex rules. Emitted once per ruleset per evaluated request if the ruleset has at least one regex rule. kelvinjiang@chromium.org src/extensions/OWNERS Logs the size of a regex rule in bytes, including rules that exceed the per-rule memory limit that aren't indexed. Note that any rules above 100Kb are recorded as 100Kb. Emitted for every regex rule an extension adds. rdevlin.cronin@chromium.org kelvinjiang@chromium.org src/extensions/OWNERS Records the request header added by extensions using the DeclarativeNetRequest API. Recorded for each network request during the OnBeforeSendHeaders stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org kelvinjiang@chromium.org src/extensions/OWNERS Records the request header modified by extensions using the DeclarativeNetRequest API. Recorded for each network request during the OnBeforeSendHeaders stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org kelvinjiang@chromium.org src/extensions/OWNERS Records the request header removed by extensions using the DeclarativeNetRequest API. Recorded for each network request during the OnBeforeSendHeaders stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org kelvinjiang@chromium.org src/extensions/OWNERS Records the response header added by extensions using the DeclarativeNetRequest API. Recorded for each network request during the OnHeadersReceived stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org kelvinjiang@chromium.org src/extensions/OWNERS Records the response header modified by extensions using the DeclarativeNetRequest API. Recorded for each network request during the OnHeadersReceived stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org kelvinjiang@chromium.org src/extensions/OWNERS Records the response header removed by extensions using the DeclarativeNetRequest API. Recorded for each network request during the OnHeadersReceived stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org src/extensions/OWNERS The time taken to determine the appropriate declarativeNetRequest action for a given request from a single ruleset in an extension where the ruleset has {RulesetSize}. This is recorded only for clients with high-resolution clocks. lazyboy@chromium.org src/extensions/OWNERS Indicates whether reindexing of a Declarative Net Request ruleset was successful. Called whenever a JSON ruleset for an extension is reindexed, e.g. on ruleset corruption. Note: this is emitted for both static and dynamic rulesets. rdevlin.cronin@chromium.org src/extensions/OWNERS Indicates the result of an extension function call to add or remove dynamic rules. Logged every time an extension calls the addDynamicRules or removeDynamicRules extension function. Note: this histogram was expired from 2023-06-26 to 2023-09-01; data may be missing. Please list the metric's owners. Add more owner tags as needed. Time spent until rules storage delegate gets ready. dbertoni@chromium.org extensions-core@chromium.org Reports whether an icon specified in the declarativeContent.SetIcon API is considered visible by our icon analysis code. This stat is emitted when we create the underlying object that sets the icon when the declarative rule is applied. dbertoni@chromium.org extensions-core@chromium.org Reports whether an icon specified in the declarativeContent.SetIcon API is considered visible by our icon analysis code. This stat is emitted when we create the underlying object that sets the icon when the declarative rule is applied. This replaces the previous stat, DeclarativeSetIconWasVisibleRendered, due to a change to our analysis algorithm. The new algorithm renders the icon against the toolbar background color and determines how visible the resulting pixels are. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Emitted each time deprecated disable reason(s) are observed for an extension when extension metrics are being collected (see GetDisableReasons in //c/b/m/extension_metrics_provider.cc). The value recorded is a bitmask with a bit set in the position of each deprecated disable reason. Most of the time there will only be one bit set and should correspond to the enum value. It is possible that there are multiple bits set, however, in which case those corresponding values will show up as missing buckets in the UMA dashboard. ghazale@chromium.org extensions-core@chromium.org Reports whether DevTools extensions are being loaded while the user has extensions developer mode enabled. This excludes extensions installed by the enterprise policy and component extensions. rdevlin.cronin@chromium.org extensions-core@chromium.org Part of the suite of Extensions.DidCreateScriptContext_* metrics. Records the time taken to install Extension JavaScript bindings per blessed extension context (chrome-extension://... origins within Extension processes, like background pages, options pages, popups). rdevlin.cronin@chromium.org extensions-core@chromium.org Part of the suite of Extensions.DidCreateScriptContext_* metrics. Records the time taken to install Extension JavaScript bindings per blessed web page context (hosted apps). rdevlin.cronin@chromium.org extensions-core@chromium.org Part of the suite of Extensions.DidCreateScriptContext_* metrics. Records the time taken to install Extension JavaScript bindings per content script context. rdevlin.cronin@chromium.org extensions-core@chromium.org Part of the suite of Extensions.DidCreateScriptContext_* metrics. Records the time taken to install Extension JavaScript bindings per content script context. This histogram measures the time to install Extension Javascript bindings in a context for a platform app enabled on the Chrome OS lock screen. rdevlin.cronin@chromium.org extensions-core@chromium.org Part of the suite of Extensions.DidCreateScriptContext_* metrics. Records the time taken to install Extension JavaScript bindings per unblessed extension context (chrome-extension://... origins hosted in iframes). rdevlin.cronin@chromium.org extensions-core@chromium.org Part of the suite of Extensions.DidCreateScriptContext_* metrics. Records the time taken to install Extension JavaScript bindings in an unknown type of context (this should never happen other than in bizarre circumstances). rdevlin.cronin@chromium.org extensions-core@chromium.org Part of the suite of Extensions.DidCreateScriptContext_* metrics. Records the time taken to install Extension JavaScript bindings per web page context (just the chrome.app, chrome.webstore, and possibly chrome.runtime APIs). rdevlin.cronin@chromium.org extensions-core@chromium.org Part of the suite of Extensions.DidCreateScriptContext_* metrics. Records the time taken to install Extension JavaScript bindings per WebUI context (chrome://extensions and so forth). rdevlin.cronin@chromium.org extensions-core@chromium.org Records the time taken to install Extension JavaScript bindings per service worker context. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions that are disabled at browser profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions that are disabled at browser profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions that are disabled at browser profile open due to permissions increases. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions that are disabled at browser profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) due to permissions increases. rdevlin.cronin@chromium.org extensions-core@chromium.org The count of disabled extensions on profile open grouped by disble reason from disable_reason::DisableReason. When an extension is disabled, it can be for one or more reasons (although typically just one), so the sum of these may be greater than 'Extensions.Disabled' which is a count of the number of unique extensions that are disabled. rdevlin.cronin@chromium.org extensions-core@chromium.org The count of disabled extensions on profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). Grouped by disable reason from disable_reason::DisableReason. When an extension is disabled, it can be for one or more reasons (although typically just one), so the sum of these may be greater than 'Extensions.Disabled' which is a count of the number of unique extensions that are disabled. dbertoni@chromium.org extensions-core@chromium.org Reports whether a call to set a dynamic icon in the toolbar passed an icon considered visible by our icon analysis code. dbertoni@chromium.org extensions-core@chromium.org Reports whether a call to set a dynamic icon in the toolbar passed an icon considered visible by our icon analysis code. This replaces the previous stat, DynamicExtensionActionIconWasVisible, due to a change to our analysis algorithm. The new algorithm renders the icon against the toolbar background color and determines how visible the resulting pixels are. rdevlin.cronin@chromium.org extensions-core@chromium.org If opening the CRX file for unpacking fails, this integer is the error code given by the OS. jeffcyr@google.com chrome-counter-abuse-alerts@google.com Reports the value of the Safe Browsing CRX allowlist custom omaha attribute when an update check occurs for an extension. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions with event pages that have no registered event listeners at profile startup. (This may indicate something has gone wrong; such event pages will never get started.) rdevlin.cronin@chromium.org extensions-core@chromium.org The time between an extension's event page loading its first URL and the event page later shutting down. rdevlin.cronin@chromium.org extensions-core@chromium.org The time an extension's event page has spent unloaded. rdevlin.cronin@chromium.org extensions-core@chromium.org The time taken for an extension's event page to load its initial URL. jlulejian@chromium.org extensions-core@chromium.org Records whether an event dispatched through the event router was acked by the renderer within a 5 minute threshold for background context of type {BackgroundContextType}. Emits true shortly after extensions browser code receives the ack from the renderer if within that threshold. Emits false if that ack hasn't occurred within the threshold. The 5 minute upper bound was chosen based on when the majority of events are ack'd. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded every time an event is dispatched to an extension. jlulejian@chromium.org extensions-core@chromium.org Records the time it took for the event to be sent to the event router for dispatch for background page of type {BackgroundContextType}. Reports samples at milliseconds granualarity up to 1 day. This is meant to investigate an appropriate time maximum for Extensions.Events.DispatchToAckTime.{BackgroundContextType}. It does not include any requests that utilize the EventRouter::DispatchEventToSender() event routing flow (some web request API, and web view API events). jlulejian@chromium.org extensions-core@chromium.org Records the time it took for the event to be sent to the event router for dispatch for background page of type {BackgroundContextType}. Reports samples at microseconds granualarity up to 5 minutes. Values over 5 minutes are bucketed together since no ack is expected to take longer than that. 5 minutes was decided since that is the maximum for extension service worker event lifetime. This is recorded only for clients with high-resolution clocks. It does not include any requests that utilize the EventRouter::DispatchEventToSender() event routing flow (some web request API, and web view API events). rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded every time an event is dispatched to a *component* extension. Otherwise identical to Extensions.Events.Dispatched. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded every time an event is dispatched to an extension with a persistent background page. The event may or may not have been dispatched to the background page itself, for example it may have been dispatched to its popup. When this metric is recorded, Extensions.Events.Dispatch will also be recorded. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded every time an event is dispatched to an extension with an event page that was already running (i.e. at some point had been woken from its suspended state, see Extensions.Events.DispatchWithSuspendedEventPage). The event may or may not have been dispatched to the event page itself, for example it may have been dispatched to its popup. When this metric is recorded, Extensions.Events.Dispatch will also be recorded. lazyboy@chromium.org dbertoni@chromium.org Recorded every time an event is dispatched to a service worker based extension background context. When this metric is recorded, Extensions.Events.Dispatch will also be recorded. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded every time an event is dispatched to an extension with an event page that was suspended. This implies that firing this event woke up the event page. The event may or may not have been dispatched to the event page itself, for example it may have been dispatched to its popup, but regardless it will wake the event page. When this metric is recorded, Extensions.Events.Dispatch will also be recorded. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Recorded when a new violation is retrieved from Omaha for an extension. The new violation reason is retrieved from the update service data key reasons during an update check for extensions. This metric was added in M92 to replace the old version, because the logic of logging greylisted extensions has changed. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Number of cached extensions on disk. Reported on Chrome OS during user session start. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Total size of .crx files in cache on disk. Reported on Chrome OS during user session start. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Recorded when an extension that was previously enabled is disabled due to a new violation retrieved from Omaha. This is recorded when the violation is detected when Chrome checks for an update for the extension. This metric was added in M92 to replace the old version, because the logic of logging greylisted extensions has changed. rdevlin.cronin@chromium.org Emitted when an extension is downloaded by the user (including webstore installs). Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The install location for a given extension. Recorded once per enabled extension on profile initialization. rdevlin.cronin@chromium.org extensions-core@chromium.org The install location for a given extension. Recorded once per enabled extension on profile initialization for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). anunoy@chromium.org chrome-counter-abuse-alerts@google.com Recorded when an extension that was previously only disabled remotely is re-enabled remotely during an update service session. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Recorded when a {BlocklistState} extension that was previously only disabled remotely is re-enabled remotely during an update service session. Please list the metric's owners. Add more owner tags as needed. Length of the Extensions dir path inside the profile directory. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of Extensions that have Page Actions. Measured once per profile open for "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). Replaced previous version (PageActionController.ExtensionsWithPageActions). Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org An extension has been uninstalled. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). anunoy@chromium.org The number of sideloaded apps/extensions loaded on profile open grouped by enabled/disabled state. anunoy@chromium.org extensions-core@chromium.org The number of sideloaded apps/extensions loaded on profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). Grouped by enabled/disabled state. Please list the metric's owners. Add more owner tags as needed. Number of extensions referenced in the external extensions source at path chrome::DIR_EXTERNAL_EXTENSIONS. archanasimha@chromium.org extensions-core@chromium.org Records when an extension with the chrome://favicon host permission makes a network level request for a favicon resource. Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The amount of time that elapsed during extensions::FeatureProvider::Static. Only measured while in the browser process. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions (and friends) that could have been given access to the file:// scheme, and were, for users that have at least one extension that could have been given access. This excludes anything that doesn't show up in chrome://extensions (platform apps, hosted apps, component extensions), policy-installed extensions, and unpacked extensions. See also Extensions.FileAccessNotAllowed. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions (and friends) that could have been given access to the file:// scheme, and were, for users that have at least one extension that could have been given access. This excludes anything that doesn't show up in chrome://extensions (platform apps, hosted apps, component extensions), policy-installed extensions, and unpacked extensions. Logged once per profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). See also Extensions.FileAccessNotAllowed. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions (and friends) that could have been given access to the file:// scheme, but weren't, for users that have at least one extension that could have been given access. This excludes anything that doesn't show up in chrome://extensions (platform apps, hosted apps, component extensions), policy-installed extensions, and unpacked extensions. See also Extensions.FileAccessAllowed. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions (and friends) that could have been given access to the file:// scheme, but weren't, for users that have at least one extension that could have been given access. This excludes anything that doesn't show up in chrome://extensions (platform apps, hosted apps, component extensions), policy-installed extensions, and unpacked extensions. Logged once per profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). See also Extensions.FileAccessAllowed. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Number of enterprise policy forced extensions that are blocklisted and thus not loaded 5 minutes after profile creation if at least one of policy forced extensions is not yet enabled. vkovalova@google.com burunduk@chromium.org poromov@chromium.org Status of cache entry about enterprise policy forced extension. Recorded for each forced extension. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The last known intermediate stage of extension when the extension installation stage if CREATED if failure reason was not recorded (installation of an extension was neither yet finished nor failed). Recorded for each forced extension that failed to install after 5 minutes. Recorded together with "Extensions.ForceInstalledTimedOutCount" histogram, but for every extension not installed at the moment. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The last known downloading stage of extension downloading process if failure reason was not recorded and installing stage is DOWNLOADING, so it's specification of Extensions.ForceInstalledStage. Recorded for each forced extension that failed to install after 5 minutes. Recorded together with "Extensions.ForceInstalledTimedOutCount" histogram, but for every extension not installed at the moment. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Status of cache entry about enterprise policy forced extension which failed to install. Recorded for each forced extension that failed to install after 5 minutes. Recorded together with "Extensions.ForceInstalledTimedOutCount" histogram, but for every extension not installed at the moment. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Detailed reason why CRX installation failed for enterprise policy forced extensions. Recorded for each forced extension that failed to install after 5 minutes with Extensions.{OffStore,Webstore}_ForceInstalledFailureReason3 equal to CRX_INSTALL_ERROR_*. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The detailed reason why enterprise policy forced extensions had failed to install because fetched update manifest was invalid due to app status error. Recorded for each forced extension that failed to install after 5 minutes with Extensions.ForceInstalledFailureReason2 equal to MANIFEST_INVALID and Extensions.ForceInstalledFailureManifestInvalidErrorDetail2 equal to BAD_APP_STATUS. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The info field in the update manifest fetched from the server for enterprise policy forced extensions. Recorded for each forced extension for which the server responds with no updates and an empty CRX fetch url. Recorded for each forced extension that failed to install after 5 minutes with Extensions.{OffStore,WebStore}_ForceInstalledFailureReason3 equal to CRX_FETCH_URL_EMPTY. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The reason why enterprise policy forced extensions were not installed. Recorded for each forced extension that failed to install after 5 minutes. Recorded together with "Extensions.ForceInstalledTimedOutCount" histogram, but for every extension not installed at the moment. Replaced Extensions.ForceInstalledFailureReason2 because of reporting MANIFEST_INVALID instead of MANIFEST_FETCH_FAILED in case parsing update manifest failed with different reasons for the extensions. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The reason why enterprise policy forced extensions had failed to unpack. Recorded for each forced extension that failed to install after 5 minutes with Extensions.ForceInstalledFailureReason3 equal to CRX_INSTALL_ERROR_SANDBOXED_UNPACKER_FAILURE. Replaced Extensions.ForceInstalledFailureSandboxUnpackFailureReason because the enum values were not in sync with the C++ enums. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The type of session in case enterprise policy forced extensions were not installed. Recorded for each force installed extension which failed to install after 5 minutes. Supported only on ChromeOS and recorded only if there is an active user. {FailureReason} vkovalova@google.com burunduk@chromium.org managed-devices@google.com Records whether the extensions are enabled or not. Recorded for each forced extension that failed to install after 5 minutes with Extensions.ForceInstalledCreationStage equal to NOTIFIED_FROM_MANAGEMENT_INITIAL_CREATION_FORCED. Replaced "Extensions.ForceInstalledFailureStuckInCreatedStageAreExtensionsEnabled" because the histogram collects data about extensions stuck in NOTIFIED_FROM_MANAGEMENT_INITIAL_CREATION_FORCED stage but the name suggested that the data is collected for extensions stuck in CREATED stage. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Records whether the extension is from the Chrome Web Store or not. Recorded for each forced extension that failed to install after 5 minutes with Extensions.ForceInstalledFailureSandboxUnpackFailureReason equal to CRX_HEADER_INVALID. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Records whether the extension is downloaded from cache or not. Recorded for each forced extension that failed to install after 5 minutes with Extensions.ForceInstalledFailureSandboxUnpackFailureReason equal to CRX_HEADER_INVALID. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The amount of time elapsed during installation of enterprise policy forced extensions. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Records the disable reason for the enterpise policy forced extensions. Recorded for each forced extension that installed but failed to load after 5 minutes. If the extension is not disabled, it records DisableReason::DISABLE_NONE. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The amount of time elapsed for enterprise policy forced extensions to become ready for use. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Records whether there was a possible non-misconfiguration failure for the enterprise policy forced extensions. Records true if in a session at least one forced extension failed to install after 5 minutes with a non-misconfiguration failure and false when all the forced extensions which failed to install after 5 minutes failed due to some misconfiguration. Recorded together with "Extensions.ForceInstalledTimedOutCount" histogram. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The last known stage of extension installation process if failure reason was not recorded (installation of an extension was neither yet finished nor failed). Recorded for each forced extension that failed to install after 5 minutes. Recorded together with "Extensions.ForceInstalledTimedOutCount" histogram, but for every extension not installed at the moment. Replaced Extensions.ForceInstalledStage because the stages that were used for used for investigation of CREATED stage are moved to a new enum. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Number of enterprise policy forced extensions that are not installed after 5 minutes if at least one of policy forced extensions is not yet enabled. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Number of enterprise policy forced extensions that are not loaded after 5 minutes timeout, while might be already installed. vkovalova@google.com burunduk@chromium.org managed-devices@google.com The amount of time elapsed during different stage of the installation process for the enterprise policy forced extensions. {ExtensionInstallStages} vkovalova@google.com burunduk@chromium.org managed-devices@google.com Total amount of extensions in force installed list. Gets recorded on profile open (which happens on every startup and when user logs in) and tries to load extensions. Number of records should correspond to the sum of records in "Extensions.ForceInstalledLoadTime" and records in "Extensions.ForceInstalledTimedOutAndNotInstalledCount". vkovalova@google.com burunduk@chromium.org managed-devices@google.com Number of fetch retries made when enterprise policy forced extensions failed to install with {ErrorType}. Recorded for each forced extension that failed to install after 5 minutes with Extensions.`OffStore,Webstore`_ForceInstalledFailureReason3 equal to {ErrorType}. vkovalova@google.com burunduk@chromium.org managed-devices@google.com Network error code for the last retry attempt when CRX fetch failed for enterprise policy forced extensions failed to install due to {ErrorType}. Recorded for each forced extension that failed to install after 5 minutes with Extensions.`OffStore,WebStore`_ForceInstalledFailureReason3 equal to {ErrorType}. nicolaso@chromium.org chrome-enterprise-team-core@google.com Number of force installed extensions that are "force-pinned" in the ExtensionSettings policy. Recorded after policies are parsed, or refreshed. Only recorded if non-zero. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). anunoy@chromium.org Number of apps/extensions loaded on profile open with an inconsistent "from webstore" state. This means an item that is flagged as from_webstore, but with either a non-webstore update_url or an external install location. anunoy@chromium.org extensions-core@chromium.org Number of apps/extensions loaded on profile open with an inconsistent "from webstore" state for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). This means an item that is flagged as from_webstore, but with either a non-webstore update_url or an external install location. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when a component extension calls an extension API. Recorded once per function call. See also Extensions.Functions.WebUICalls, Extensions.Functions.WebUIUntrustedCalls, Extensions.Functions.NonExtensionWebPageCalls and Extensions.Functions.ExtensionCalls. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when a non-component extension calls an extension API. Recorded once per function call. See also Extensions.Functions.WebUICalls, Extensions.Functions.WebUIUntrustedCalls, Extensions.Functions.NonExtensionWebPageCalls and Extensions.Functions.ComponentExtensionCalls. tjudkins@chromium.org rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when a manifest V3 extension calls an extension API. Note that the function would also be included in either Extensions.Functions.ExtensionCalls or Extensions.Functions.ComponentExtensionCalls histogram. lazyboy@chromium.org dbertoni@chromium.org rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when an extension service worker calls an extension API. Note that the function would also be included in either Extensions.Functions.ExtensionCalls or Extensions.Functions.ComponentExtensionCalls histogram. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when an extension function call fails and finishes execution. The suffix indicates the exact bucket the function is in. See also Extensions.Functions.FailedTotalExecutionTime. {ExtensionFunctionExecutionTime} Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The total amount of time it took to execute an extension function that failed from the time the extension function is called to the time the function responds. Note that since some extension functions are inherently slow (anything that requires user interaction, for instance), this is not a definitive source for function performance. In M-102 this histogram was split and events from kiosk extensions are recorded in the separate Extensions.Functions.FailedTotalExecutionTime.Kiosk histogram. rdevlin.cronin@chromium.org extensions-core@chromium.org The amount of time it takes to handle a response for an extension API request. Recorded on the renderer side once we receive the response IPC from the browser and have deserialized the arguments and passed them to the JS context. Only recorded if the response is successfully handled. tjudkins@chromium.org rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when a Web Page context not associated with an extension calls an extension API. Generally extension APIs are only exposed to extensions or WebUI, but there are rare cases where an API is exposed to a web page not associated with an extension e.g. the Chrome Webstore. Recorded once per function call. See also Extensions.Functions.WebUICalls, Extensions.Functions.WebUIUntrustedCalls, Extensions.Functions.ComponentExtensionCalls and Extensions.Functions.ExtensionCalls. rdevlin.cronin@chromium.org extensions-core@chromium.org The amount of time it takes to start an extension API request. Recorded on the renderer side after we perform JS pre-processing, but includes all serialization and dispatching. Only recorded if the request is successfully dispatched. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when an extension function call succeeds and finishes execution. The suffix indicates the exact bucket the function is in. See also Extensions.Functions.SucceededTotalExecutionTime. {ExtensionFunctionExecutionTime} rdevlin.cronin@chromium.org extensions-core@chromium.org The total amount of time it took to execute an extension function that succeeded from the time the extension function is called to the time the function responds. Note that since some extension functions are inherently slow (anything that requires user interaction, for instance), this is not a definitive source for function performance. rdevlin.cronin@chromium.org extensions-core@chromium.org The synchronous amount of time an extension function takes. Note that many extension functions run asynchronously; see also Extensions.Functions.[Succeeded|Failed]TotalExecutionTime. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when a WebUI context calls an extension API. Recorded once per function call. See also Extensions.Functions.WebUIUntrustedCalls, Extensions.Functions.NonExtensionWebPageCalls, Extensions.Functions.ComponentExtensionCalls and Extensions.Functions.ExtensionCalls. rdevlin.cronin@chromium.org extensions-core@chromium.org Recorded when a WebUI context calls an extension API. Recorded once per function call. See also Extensions.Functions.WebUICalls, Extensions.Functions.NonExtensionWebPageCalls, Extensions.Functions.ComponentExtensionCalls and Extensions.Functions.ExtensionCalls. arabm@chromium.org chrome-incognito@google.com This histogram records requests to use resources from Google Docs Offline extension, along with whether the extension has been available or not and the request has been done from incognito mode or not. Note that this request is double counted for the imports. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Emits the Extension::Location of a newly-disabled greylisted extension. Logged when SafeBrowsingVerdictHandler greylists and disables an installed extension. anunoy@chromium.org chrome-counter-abuse-alerts@google.com Emits the Extension::Location of an extension that was ungreylisted. Logged when SafeBrowsingVerdictHandler ungreylists and enables an installed extension. mcnee@chromium.org src/components/guest_view/OWNERS It is possible for a Chrome Apps webview to be attached to a WebContents that did not create it. This reports True if attachment involves a change to the owner WebContents or False if attachment does not change the owner. We'd like to understand how common this case is, as this is architecturally complex to support. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org Whether there were any permissions present in an extension when it was installed . To find places where this histogram may be emitted, look for calls to ExtensionService::RecordPermissionMessagesHistogram with the argument Install. For Sync users, this is reported for each device. rdevlin.cronin@chromium.org extensions-core@chromium.org Whether there were any permissions present in an extension when it was installed for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). To find places where this histogram may be emitted, look for calls to ExtensionService::RecordPermissionMessagesHistogram with the argument Install. For Sync users, this is reported for each device. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org Whether there were any permissions present in an extension when it was loaded (which happens at profile open or extension install). To find places where this histogram may be emitted, look for calls to ExtensionService::RecordPermissionMessagesHistogram with the argument Load. rdevlin.cronin@chromium.org extensions-core@chromium.org Whether there were any permissions present in an extension when it was loaded (which happens at profile open or extension install) for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). To find places where this histogram may be emitted, look for calls to ExtensionService::RecordPermissionMessagesHistogram with the argument Load. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org kelvinjiang@chromium.org The number of enabled extensions with a homepage override specified in their manifest. Recorded once per profile at profile initialization. rdevlin.cronin@chromium.org kelvinjiang@chromium.org The number of enabled extensions with a homepage override specified in their manifest. Recorded once per "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) at profile initialization. benwells@chromium.org dominickn@chromium.org Records the container used for a hosted app launch, when the app is launched. The definition of 'launch' for the purposes of this histogram is different to that used for the launch type histograms. This definition is less inclusive, for example it does not include navigations to the hosted app due to normal browsing, which the other definition does include. This definition could be thought of more as explicit launches via a launch surface such as the app launcher, chrome://apps, or a shortcut. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). emiliapaz@chromium.org extensions-core@chromium.org Records the host permissions access for a enabled extension as a result of the RuntimeHostPermissions feature. Recorded once per extension at profile initialization. emiliapaz@chromium.org extensions-core@chromium.org Records the host permissions access for a enabled extension as a result of the RuntimeHostPermissions feature. Recorded once per extension at profile initialization for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). emiliapaz@chromium.org extensions-core@chromium.org Records the host permissions access for each enabled extension that specifies a host permission that matches an effective TLD. Recorded once per extension at profile initialization. emiliapaz@chromium.org extensions-core@chromium.org Records the host permissions access for each enabled extension that specifies a host permission that matches an effective TLD. Recorded once per extension at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). emiliapaz@chromium.org extensions-core@chromium.org Records the host permissions access for each enabled extension that specifies hosts, but has no host permission that matches an effective TLD. Recorded once per extension at profile initialization. emiliapaz@chromium.org extensions-core@chromium.org Records the host permissions access for each enabled extension that specifies hosts, but has no host permission that matches an effective TLD. Recorded once per extension at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions (and friends) that could have been allowed in incognito, and were, for users that have at least one extension that could have been allowed. This excludes anything that doesn't show up in chrome://extensions (platform apps, hosted apps, component extensions), policy-installed extensions, and unpacked extensions. See also Extensions.IncognitoNotAllowed. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions (and friends) that could have been allowed in incognito, and were, for users that have at least one extension that could have been allowed. This excludes anything that doesn't show up in chrome://extensions (platform apps, hosted apps, component extensions), policy-installed extensions, and unpacked extensions. Logged at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. See also Extensions.IncognitoNotAllowed. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions (and friends) that could have been allowed in incognito, but weren't, for users that have at least one extension that could have been allowed. This excludes anything that doesn't show up in chrome://extensions (platform apps, hosted apps, component extensions), policy-installed extensions, and unpacked extensions. See also Extensions.IncognitoAllowed. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions (and friends) that could have been allowed in incognito, but weren't, for users that have at least one extension that could have been allowed. This excludes anything that doesn't show up in chrome://extensions (platform apps, hosted apps, component extensions), policy-installed extensions, and unpacked extensions. Logged at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. See also Extensions.IncognitoAllowed. Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The amount of time that elapsed during the GetExtensions call within ExtensionPrefs::InitPrefStore. rdevlin.cronin@chromium.org extensions-core@chromium.org The amount of time for a CSS file to be injected into a page. rdevlin.cronin@chromium.org extensions-core@chromium.org Time taken to execute all scripts for one location within an extension. Recorded every time content scripts injected by extensions are executed. Unlike Extensions.InjectScriptTime, this includes execution time of asynchronously injected scripts. rdevlin.cronin@chromium.org Number of blocking scripts injected at document end by extensions. rdevlin.cronin@chromium.org Number of scripts injected at document end by extensions. rdevlin.cronin@chromium.org extensions-core@chromium.org Time taken to inject all scripts at document end by extensions. Not reported if scripts are executed asynchronously. rdevlin.cronin@chromium.org Number of blocking scripts injected at document idle by extensions. rdevlin.cronin@chromium.org Number of scripts injected at document idle by extensions. rdevlin.cronin@chromium.org extensions-core@chromium.org Time taken to inject all scripts at document idle by extensions. Not reported if scripts are executed asynchronously. rdevlin.cronin@chromium.org extensions-core@chromium.org Number of blocking scripts injected at document start by extensions. rdevlin.cronin@chromium.org Number of css files injected by extensions. rdevlin.cronin@chromium.org extensions-core@chromium.org Number of scripts injected at document start by extensions. rdevlin.cronin@chromium.org Time taken to inject css/scripts at document start by extensions. Not reported if scripts are executed asynchronously. jeffcyr@google.com chrome-counter-abuse-alerts@google.com Action taken in the extension install friction dialog displayed to Enhanced Safe Browsing users before installing an extension that is not included in the Safe Browsing CRX allowlist. kelvinjiang@chromium.org extensions-core@chromium.org Time from first display of the extension installation prompt until the user aborts the installation through clicking the cancel button or dismissing the dialog. kelvinjiang@chromium.org extensions-core@chromium.org Time from first display of the extension installation prompt until the user accepts the installation. Will always be greater than 500ms as the install option is enabled after that time has elapsed. meacer@chromium.org rdevlin.cronin@chromium.org Type of the extension install prompt displayed when an extension installation is triggered. Replaced Extensions.InstallPrompt.Type 2019-07. Histogram is in the process of being removed in favor of its new versions (Extensions.InstallType.User and Extensions.InstallType.Nonuser) that emit only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org Installs grouped by the location property in prefs. Emitted once per profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org Installs grouped by the location property in prefs for "non-user" profiles (profiles where people can't install extensions, specifically profiles that can have only have non-component extensions installed). Emitted once per profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org Installs grouped by the location property in prefs for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). Emitted once per profile open. Histogram is in the process of being removed in favor of its new versions (Extensions.InstallType.User and Extensions.InstallType.Nonuser) that emit only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org Installs grouped by Extension::HistogramType emitted once per extension install. rdevlin.cronin@chromium.org extensions-core@chromium.org Installs grouped by Extension::HistogramType for non-"user profiles" (profiles where people cannot install extensions, specifically profiles that can only have component extensions installed). Emitted once per extension install. rdevlin.cronin@chromium.org extensions-core@chromium.org Installs grouped by Extension::HistogramType for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). Emitted once per extension install. dbertoni@chromium.org extensions-core@chromium.org The amount of elapsed time taken to render an icon against a specified background color and determine whether it would be visible to the user. Recorded every time the analysis code is called. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions and themes loaded at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions and themes loaded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its new versions (Extensions.LoadAllComponentTime.NonUser and Extensions.LoadAllComponentTime.User) that emit only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org Time taken to load all component extensions at profile open. This happens as part of the total initialization time of ExtensionService, measured in Extensions.ExtensionServiceInitTime. rdevlin.cronin@chromium.org extensions-core@chromium.org Time taken to load all component extensions at profile open for non-"user profiles" (profiles where people cannot install extensions, specifically profiles that can only have component extensions installed). This happens as part of the total initialization time of ExtensionService, measured in Extensions.ExtensionServiceInitTime. Emitted once per profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org Time taken to load all component extensions at profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). This happens as part of the total initialization time of ExtensionService, measured in Extensions.ExtensionServiceInitTime. Emitted once per profile open. Histogram is in the process of being removed in favor of its new versions (Extensions.LoadAllTime2.NonUser and Extensions.LoadAllTime2.User) that emit only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org Time taken to load all non-component extensions at profile open and record metrics. This happens as part of the total initialization time of ExtensionService, measured in Extensions.ExtensionServiceInitTime. rdevlin.cronin@chromium.org extensions-core@chromium.org Time taken to load all non-component extensions at profile open and record metrics for non-"user profiles" (profiles where people cannot install extensions, specifically profiles that can only have component extensions installed). This happens as part of the total initialization time of ExtensionService, measured in Extensions.ExtensionServiceInitTime. Emitted once per profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org Time taken to load all non-component extensions at profile open and record metrics for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). This happens as part of the total initialization time of ExtensionService, measured in Extensions.ExtensionServiceInitTime. Emitted once per profile open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of apps loaded by each user at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of apps loaded by each user at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The number of externally managed apps loaded by each user at profile open. rdevlin.cronin@chromium.org The number of externally managed apps loaded by each user at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of user-installed apps loaded by each user at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of user-installed apps loaded by each user at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of browser action extensions loaded at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of browser action extensions loaded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions loaded at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions loaded at profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The number of externally managed extensions loaded at profile open. rdevlin.cronin@chromium.org The number of externally managed extensions loaded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The number of user-installed extensions loaded at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of user-installed extensions loaded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. rdevlin.cronin@chromium.org The number of externally managed extensions and apps loaded at profile open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of hosted apps loaded by each user at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of hosted apps loaded by each user at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of extensions that had neither a page nor browser action specified in their manifest. Recorded at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions that had neither a page nor browser action specified in their manifest. Recorded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The number of enabled extensions or apps the user has installed that do not update from the Chrome Web Store. Recorded during profile initialization. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of enabled extensions or apps the user has installed that do not update from the Chrome Web Store. Recorded during "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of legacy packaged apps loaded by each user at profile open. rdevlin.cronin@chromium.org The number of legacy packaged apps loaded by each user at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of platform apps loaded at profile open. rdevlin.cronin@chromium.org The number of platform apps loaded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The number of themes loaded at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of themes loaded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions loaded at profile open grouped by Extension::HistogramType. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions loaded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open grouped by Extension::HistogramType. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The number of converted user scripts loaded at profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of converted user scripts loaded at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. jam@chromium.org cduvall@chromium.org Measures how long ExtensionManagement::Refresh takes. This reloads all enterprise-related policies for all extensions, and is called both at startup and any time the enterprise policy changes. Please list the metric's owners. Add more owner tags as needed. Number of times chrome retried to download an extension update manifest with a url on a google.com domain, before eventually giving up. Please list the metric's owners. Add more owner tags as needed. Number of times chrome retried to download an extension update manifest with a url on a non google.com domain, before eventually giving up. Please list the metric's owners. Add more owner tags as needed. Number of times chrome retried to download an extension update manifest with a url on a google.com domain, before eventually succeeding. Please list the metric's owners. Add more owner tags as needed. Number of times chrome retried to download an extension update manifest with a url on a non google.com domain, before eventually succeeding. dbertoni@chromium.org extensions-core@chromium.org Reports whether an icon that's specified in the manifest is considered visible by our icon analysis code. This stat is only for packed extensions, which we check dynamically when the icon is requested. The stat is emitted the first time the default icon is requested, since we cache the icon that's selected. dbertoni@chromium.org extensions-core@chromium.org Reports whether an icon that's specified in the manifest is considered visible by our icon analysis code. This stat is only for packed extensions, which we check dynamically when the icon is requested. The stat is emitted the first time the default icon is requested, since we cache the icon that's selected. This replaces the previous stat, ManifestIconSetIconWasVisibleForPacked, due to a change to our analysis algorithm. The new algorithm renders the icon against the toolbar background color and determines how visible the resulting pixels are. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The manifest version of each loaded extension. rdevlin.cronin@chromium.org extensions-core@chromium.org The manifest version of each loaded extension. Emitted for each extension at "user profils" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of enabled manifest version 2 {ManifestLocation}. Emitted once on profile startup for user profiles (profiles where users can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The number of enabled manifest version 3 {ManifestLocation}. Emitted once on profile startup for user profiles (profiles where users can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The manifest version of an enabled {ManifestLocation}. Emitted for every enabled extension (not for other extension-y items, like platform apps) on profile startup for user profiles (profiles where users can install extensions, specifically profiles that can have non-component extensions installed). dbertoni@chromium.org extensions-core@chromium.org The number of context menu items loaded from storage when an extension is loaded. rdevlin.cronin@chromium.org The number of ports created in a given script context at a specific time. Recorded once at the destruction of the script context (when no more ports could be created) if and only if at least one port was created in the context. Only includes ports to extension contexts (i.e., not ports created to tabs or native apps). {ExtensionMessagingPortCreationTime} rdevlin.cronin@chromium.org The total amount of time between when an extension opens a new channel and when it receives the global port id from the browser and can begin sending messages. {ExtensionMessagingPortType} rdevlin.cronin@chromium.org The amount of synchronous time taken for the renderer to request an extension message port id from the browser when a new channel is first opened by an extension. {ExtensionMessagingPortType} Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The size, in bytes, of a message sent from an extension using one of the messaging APIs (e.g. chrome.runtime.sendMessage). All message sizes are logged, but messages over 64 MB in size aren't sent. rdevlin.cronin@chromium.org The amount of time for the renderer to inform the browser process of a new port being created with a certain id. This replaces the flow for Extensions.Messaging.GetPortId[A]SyncTime. {ExtensionMessagingPortType} jkokatsu@google.com extensions-core@chromium.org Counts usage of various schemes (e.g. file:, chrome:, http:) when a navigation is triggered from an extension (such as through tabs API). rdevlin.cronin@chromium.org kelvinjiang@chromium.org src/extensions/OWNERS Time that network requests were blocked due to extensions. battre@chromium.org src/extensions/OWNERS Percentage of total lifetime a network request was blocked due to an extension. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org kelvinjiang@chromium.org The number of enabled extensions with a New Tab Page override specified in their manifest. Recorded once per profile at profile initialization. rdevlin.cronin@chromium.org kelvinjiang@chromium.org The number of enabled extensions with a New Tab Page override specified in their manifest. Recorded once per "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) at profile open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org The number of apps/extensions with a non-webstore update_url loaded on profile open and grouped by Extension::Location. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of apps/extensions with a non-webstore update_url loaded on profile open grouped by Extension::Location. Emitted per "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). anunoy@chromium.org Number of non-WebStore extensions on profile open that override the new tab page. anunoy@chromium.org extensions-core@chromium.org Number of non-WebStore extensions on profile open for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) that override the new tab page. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). jeffcyr@google.com chrome-counter-abuse-alerts@google.com The total number of disabled extensions that are not present in the Enhanced Safe Browsing CRX allowlist. Recorded for all users on profile initialization. jeffcyr@google.com chrome-counter-abuse-alerts@google.com The total number of disabled extensions that are not present in the Enhanced Safe Browsing CRX allowlist. Recorded for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) on profile initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). jeffcyr@google.com chrome-counter-abuse-alerts@google.com The total number of disabled extensions that are not present in the Enhanced Safe Browsing CRX allowlist. Recorded for only for Enhanced Safe Browsing users on profile initialization. jeffcyr@google.com chrome-counter-abuse-alerts@google.com The total number of disabled extensions that are not present in the Enhanced Safe Browsing CRX allowlist. Recorded for only for Enhanced Safe Browsing users on "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). jeffcyr@google.com chrome-counter-abuse-alerts@google.com The total number of enabled extensions that are not present in the Enhanced Safe Browsing CRX allowlist. Recorded for all users on profile initialization. jeffcyr@google.com chrome-counter-abuse-alerts@google.com The total number of enabled extensions that are not present in the Enhanced Safe Browsing CRX allowlist. Recorded for "user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) on profile initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). jeffcyr@google.com chrome-counter-abuse-alerts@google.com The total number of enabled extensions that are not present in the Enhanced Safe Browsing CRX allowlist. Recorded for only for Enhanced Safe Browsing users on profile initialization. jeffcyr@google.com chrome-counter-abuse-alerts@google.com The total number of enabled extensions that are not present in the Enhanced Safe Browsing CRX allowlist. Recorded for only for Enhanced Safe Browsing users on "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The permissions present in an extension when it was installed. To find places where this histogram may be emitted, look for calls to ExtensionService::RecordPermissionMessagesHistogram with the argument Install. For Sync users, this is reported for each device. rdevlin.cronin@chromium.org extensions-core@chromium.org The permissions present in an extension when it was installed. To find places where this histogram may be emitted, look for calls to ExtensionService::RecordPermissionMessagesHistogram with the argument Install. Emitted once per "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open. For Sync users, this is reported for each device. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The permissions present in an extension when it was loaded (which happens at profile open or extension install). To find places where this histogram may be emitted, look for calls to ExtensionService::RecordPermissionMessagesHistogram with the argument Load. rdevlin.cronin@chromium.org extensions-core@chromium.org The permissions present in an extension when it was loaded (which happens at profile open or extension install). Only emitted for quot;user profiles" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). To find places where this histogram may be emitted, look for calls to ExtensionService::RecordPermissionMessagesHistogram with the argument Load. tnagel@chromium.org chrome-privacy-core@chromium.org The number of extensions reported in chrome://management UI with powerful permissions. This number is recorded every time the user opens chrome://management UI. rdevlin.cronin@chromium.org extensions-core@chromium.org The time taken to start up persistent background pages for extensions in ExtensionProcessManager when the extension system notifies that it is ready. This version of the histogram does not include cases where the background page startup is deferred, which would have been logged as ~0ms startup in Extensions.ProcessManagerStartupHostsTime. Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org Whether the DISABLE_PERMISSIONS_INCREASE disable reason was removed from an extension while checking for a permissions increase. Recorded during startup and on reload and update, for each extension that has the DISABLE_PERMISSIONS_INCREASE reason. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org src/extensions/OWNERS Whether an extension had host permissions withheld as a result of the RuntimeHostPermissions feature. Recorded once per extension at profile initialization if and only if the RuntimeHostPermissions feature is enabled and the extension requests any host permissions (i.e., could be affected by the feature). rdevlin.cronin@chromium.org extensions-core@chromium.org Whether an extension had host permissions withheld as a result of the RuntimeHostPermissions feature. Recorded once per extension at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization if and only if the RuntimeHostPermissions feature is enabled and the extension requests any host permissions (i.e., could be affected by the feature). Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org src/extensions/OWNERS The number of hosts an extension has been granted explicit access to that it also requested (note that if the user granted unrequested hosts, those will not be included in this count). Recorded once per extension at profile initialization if and only if the RuntimeHostPermissions feature is enabled and the extension has had host permissions withheld. See also Extensions.RuntimeHostPermissions.ExtensionHasWithheldHosts. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of hosts an extension has been granted explicit access to that it also requested (note that if the user granted unrequested hosts, those will not be included in this count). Recorded once per extension at "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization if and only if the RuntimeHostPermissions feature is enabled and the extension has had host permissions withheld. See also Extensions.RuntimeHostPermissions.ExtensionHasWithheldHosts. solomonkinard@google.com extensions-core@chromium.org Logs if the requested extension subresource is a Web Accessible Resource that is "visible" to any requesting origin. Logged for each extension subresource request if the requesting origin is opaque (with precursor origin also being an extension). rdevlin.cronin@chromium.org extensions-core@chromium.org The reason an extension failed to unpack, recorded when a failure occurs. Replaced Extensions.SandboxUnpackFailureReason because the enum values were not in sync with the C++ enums. achuith@chromium.org Whether a CRX file hash sum was the same as in an updater manifest. rdevlin.cronin@chromium.org extensions-core@chromium.org Count the number of times a sandboxed CRX unpack succeeds. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org kelvinjiang@chromium.org The number of enabled extensions with a search engine override specified in their manifest. Recorded once per profile at profile initialization. rdevlin.cronin@chromium.org kelvinjiang@chromium.org The number of enabled extensions with a search engine override specified in their manifest. Recorded once per "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) at profile initialization. jlulejian@chromium.org extensions-core@chromium.org Tracks the result (ServiceWorkerExternalRequestResult) of when we attempt to remove (finish) an external request for the extension service worker. Emitted when we attempt to finish the external request after the browser has received an ack from the renderer that it fired the event in the service worker. Specifically the emit is delayed until *after* we've attempted to return early for either a stopped worker or the starting of the external request failing. rdevlin.cronin@chromium.org extensions-core@chromium.org The result from the extension process manager notifying the ServiceWorkerContext of a service worker-based extension that an external request that started with a result of "OK" has finished. Emitted immediately after the call to notify the ServiceWorkerContext is made as part of decrementing the service worker keepalive count. rdevlin.cronin@chromium.org extensions-core@chromium.org The result from the extension process manager notifying the ServiceWorkerContext of a service worker-based extension that an external request that started with a result of anything other than "OK" has finished. Emitted immediately after the call to notify the ServiceWorkerContext is made as part of decrementing the service worker keepalive count. rdevlin.cronin@chromium.org extensions-core@chromium.org The result from the extension process manager notifying the ServiceWorkerContext of a service worker-based extension that an external request has started as part of incrementing the service worker keepalive count. Emitted immediately after the call to to notify the ServiceWorkerContext is made. lazyboy@chromium.org dbertoni@chromium.org Recorded when Service Worker registration wasn't found when expected. This also records the manifest location of the extension. lazyboy@chromium.org dbertoni@chromium.org Whether the attempt to re-register an extension Service Worker to mitigate missing registration issue succeeded. The attempt is performed during extension load. lazyboy@chromium.org dbertoni@chromium.org Tracks whether background service worker registration succeeded or not. lazyboy@chromium.org dbertoni@chromium.org The amount of time it takes to register a service worker background script. lazyboy@chromium.org dbertoni@chromium.org Whether or not an expected Service Worker registration was found. Note that this expectation was stored in ExtensionPrefs. jlulejian@chromium.org extensions-core@chromium.org Tracks when a background service worker fails to start what is the ServiceWorkerStatusCode that occurred. Logged each time a service worker fails to start when we attempt to start it for extension tasks. jlulejian@chromium.org extensions-core@chromium.org Tracks whether background service worker starting succeeded or not. Logged each time a service worker has been started for extension tasks. jlulejian@chromium.org extensions-core@chromium.org The amount of time it takes to start the background service worker of an extension that succeeded in starting. Logged when we've confirmed the service worker is started for extension tasks to run. jlulejian@chromium.org extensions-core@chromium.org The amount of time it takes to start the background service worker of an extension that failed in starting. Logged when we've confirmed the service worker has failed for extension tasks to run. rdevlin.cronin@chromium.org extensions-core@chromium.org The count of active workers registered in the extension ProcessManager for a given service worker-based extension. Reported immediately after a new worker is registered for the extension. rdevlin.cronin@chromium.org extensions-core@chromium.org The count of active workers registered in the extension ProcessManager for a given service worker-based extension. Reported immediately after a worker for the extension is removed from the active set. rdevlin.cronin@chromium.org extensions-core@chromium.org The action taken on the settings overridden dialog that was shown to alert the user of an extension overriding the New Tab Page, when the dialog shown is the version that asks the user if they want to go back to Google's New Tab Page. Recorded once per instance of the dialog being shown, after the action is taken. rdevlin.cronin@chromium.org extensions-core@chromium.org The action taken on the settings overridden dialog that was shown to alert the user of an extension overriding the default search provider, when the dialog shown is the version that asks the user if they want to go back to Google search. Recorded once per instance of the dialog being shown, after the action is taken. rdevlin.cronin@chromium.org extensions-core@chromium.org The action taken on the settings overridden dialog that was shown to alert the user of an extension overriding the default search provider, when the dialog shown is the version that asks the user if they want to go back to a previous search engine that isn't Google. Recorded once per instance of the dialog being shown, after the action is taken. rdevlin.cronin@chromium.org extensions-core@chromium.org The action taken on the settings overridden dialog that was shown to alert the user of an extension overriding the New Tab Page, when the dialog shown is the generic version. Recorded once per instance of the dialog being shown, after the action is taken. rdevlin.cronin@chromium.org extensions-core@chromium.org The action taken on the settings overridden dialog that was shown to alert the user of an extension overriding the default search provider, when the dialog shown is the generic version. Recorded once per instance of the dialog being shown, after the action is taken. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org kelvinjiang@chromium.org The number of enabled extensions with startup page overrides specified in their manifest. Recorded once per profile at profile initialization. rdevlin.cronin@chromium.org kelvinjiang@chromium.org The number of enabled extensions with startup page overrides specified in their manifest. Recorded once per "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) at profile initialization. alancutter@chromium.org extensions-core@chromium.org Records true whenever an extension sync install attempt was blocked because it was a default Chrome app that has been migrated over to a web app. Never records false. Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The amount of synchronous time spent retrieving an extension's message bundle (the collection of its i18n resources) from the browser. Code removed 2022/12. rdevlin.cronin@chromium.org extensions-core@chromium.org The duration by which a network request was delayed while waiting for extension user script load. Recorded once per request that is delayed, at the time the resource resumes loading. emiliapaz@chromium.org extensions-core@chromium.org The number of extensions in the request access button that were granted site access after the user clicked on the request access button. rdevlin.cronin@chromium.org extensions-core@chromium.org The source that triggered an extension action. Recorded once per invocation of an extension action. rdevlin.cronin@chromium.org extensions-core@chromium.org The number of extensions that the user has pinned on the toolbar. Recorded once per profile during initialization if the user has at least one extension with an action in the toolbar. rdevlin.cronin@chromium.org extensions-core@chromium.org The percentage of extensions that the user has pinned to the toolbar (i.e., this will be 100 if the user has every extension pinned). Recorded once per profile during initialization if the user has at least one extension with an action in the toolbar. Obsolete in M110. phillis@chromium.org extensions-core@chromium.org Tracks whether bookmark app uninstalling succeeded or not. This is emitted whenever a bookmark app (which is deprecated) gets uninstalled. rdevlin.cronin@chromium.org extensions-core@chromium.org The source for the extension uninstall. This is only recorded if an uninstall dialog is shown to the user (i.e., it is not recorded for internal "cleanups"). Note: this is no longer emitted for web app uninstalls as of M113. rdevlin.cronin@chromium.org extensions-core@chromium.org Uninstalls grouped by Extension::HistogramType. Please list the metric's owners. Add more owner tags as needed. The number of extensions that were updated at browser startup. Please list the metric's owners. Add more owner tags as needed. Updates grouped by the location property in prefs. Please list the metric's owners. Add more owner tags as needed. Updates grouped by Extension::HistogramType. apotapchuk@chromium.org anqing@chromium.org Tracks the usage of different MIME type handlers used to view files. It is recorded when the browser intercepts navigation with one of the type handlers. rdevlin.cronin@chromium.org src/extensions/OWNERS The total amount of time taken to evaluate declarativeNetRequest rules in the onBeforeRequest stage, measured in milliseconds. Recorded once per request if and only if at least one declarativeNetRequest rule is present. rdevlin.cronin@chromium.org src/extensions/OWNERS The total amount of time taken to evaluate declarativeNetRequest rules in the onBeforeRequest stage, measured in microseconds. Recorded once per request if and only if at least one declarativeNetRequest rule is present. This is only emitted for users with high resolution clocks. rdevlin.cronin@chromium.org src/extensions/OWNERS The total amount of time, measured in milliseconds, between when an event is dispatched to webRequest listeners and when all responses are received and handled for an onBeforeRequest event. Emitted when there are {HandlerTypes} for the request. Recorded once per request if the request completes. rdevlin.cronin@chromium.org src/extensions/OWNERS The total amount of time, measured in milliseconds, between when an event is dispatched to webRequest listeners and when all responses are received and handled for an onBeforeRequest event. Emitted when there are {HandlerTypes} for the request. Recorded once per request if the request completes. This is only emitted for users with high resolution clocks. rdevlin.cronin@chromium.org src/extensions/OWNERS Records any flags that were registered in the extraInfoSpec of a webRequest listener, as well as the total number of listeners registered. Recorded each time a new listener is registered. bashi@chromium.org blink-network-stack@google.com Whether and how keepalive requests are blocked. There is a similar histgoram Net.KeepaliveRequest.BlockStatus. See there for the difference between the two histograms. rdevlin.cronin@chromium.org src/extensions/OWNERS Records the request header added by extensions using the WebRequest API. Recorded for each network request during the OnBeforeSendHeaders stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org src/extensions/OWNERS Records the request header modified by extensions using the WebRequest API. Recorded for each network request during the OnBeforeSendHeaders stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org src/extensions/OWNERS Records the request header removed by extensions using the WebRequest API. Recorded for each network request during the OnBeforeSendHeaders stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org src/extensions/OWNERS Records the response header added by extensions using the WebRequest API. This is logged for the cumulative delta across all the web request extensions. Recorded for each network request during the OnHeadersReceived stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org src/extensions/OWNERS Records the response header modified by extensions using the WebRequest API. This is logged for the cumulative delta across all the web request extensions. Recorded for each network request during the OnHeadersReceived stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org src/extensions/OWNERS Records the response header removed by extensions using the WebRequest API. This is logged for the cumulative delta across all the web request extensions. Recorded for each network request during the OnHeadersReceived stage. Multiple samples can be recorded per request. rdevlin.cronin@chromium.org src/extensions/OWNERS The total time a network request took when at least one Web Request listener was registered at the start of the request, and a listener was blocked on the request. Measures from onBeforeRequest to onCompleted/onErrorOccurred, and does not include canceled or redirected requests. rdevlin.cronin@chromium.org src/extensions/OWNERS The total time a network request took when at least one Web Request listener with 'extraHeaders' in the extraInfoSpec was registered at the start of the request. Measures from onBeforeRequest to onCompleted/onErrorOccurred, and does not include canceled or redirected requests. rdevlin.cronin@chromium.org src/extensions/OWNERS The total time a network request took when at least one Web Request listener was registered at the start of the request. Measures from onBeforeRequest to onCompleted/onErrorOccurred, and does not include canceled or redirected requests. rdevlin.cronin@chromium.org src/extensions/OWNERS Counts the number of times an action is requested by extensions as part of the Web Request API. For a given web request stage, multiple actions may be logged. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org src/extensions/OWNERS Number of enabled extensions which have requested the "webRequestBlocking" permission. Includes all kinds of extensions, including component and unpacked extensions. Recorded during profile initialization. rdevlin.cronin@chromium.org extensions-core@chromium.org Number of enabled extensions which have requested the "webRequestBlocking" permission. Includes all kinds of extensions, including component and unpacked extensions. Recorded during "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org src/extensions/OWNERS Number of enabled extensions which have requested the "webRequest" permission. Includes all kinds of extensions, including component and unpacked extensions. Recorded during profile initialization. rdevlin.cronin@chromium.org extensions-core@chromium.org Number of enabled extensions which have requested the "webRequest" permission. Includes all kinds of extensions, including component and unpacked extensions. Recorded during "user profile" (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) initialization. jeffcyr@google.com chrome-counter-abuse-alerts@google.com Reports the Safe Browsing CRX allowlist state received from Chrome Web Store when a user presses on "Add to Chrome" in Chrome Web Store. jeffcyr@google.com chrome-counter-abuse-alerts@google.com Reports when a user with install friction dialog enabled tries to install an extension that is not included in the Safe Browsing CRX allowlist. 'True' if the install dialog is accepted or 'False' if the friction dialog or install dialog is canceled. jeffcyr@google.com chrome-counter-abuse-alerts@google.com Reports when a user with install friction dialog disabled tries to install an extension that is not included in the Safe Browsing CRX allowlist. 'True' if the install dialog is accepted or 'False' if the install dialog is canceled. dpapad@chromium.org dbeam@chromium.org The amount of time between starting the provisional load and fully loading the document in the main frame of the chrome://extensions page. This corresponds to the WebContentsObserver::DocumentLoadedInFrame method. {ExtensionWebUiPageType} dpapad@chromium.org dbeam@chromium.org The amount of time between starting the provisional load and having completed the onload handler in the main frame of the chrome://extensions page. This corresponds to the WebContentsObserver::DocumentOnLoadCompletedInPrimaryMainFrame method. {ExtensionWebUiPageType} vkovalova@google.com burunduk@chromium.org managed-devices@google.com The detailed reason why enterprise policy forced extensions had failed to install because fetched update manifest was invalid. Recorded for each forced extension that failed to install after 5 minutes with Extensions.ForceInstalledFailureReason2 equal to MANIFEST_INVALID. Replaced Extensions.ForceInstalledFailureManifestInvalidErrorDetail due to addition of new error BAD_APP_STATUS, and some of the errors that were MISSING_UPDATE_CHECK_TAG would now be reported as BAD_APP_STATUS. vkovalova@google.com burunduk@chromium.org managed-devices@google.com HTTP error code for the last retry attempt when for enterprise policy forced extensions failed with {ErrorType}. Recorded for each forced extension that failed to install after 5 minutes with Extensions.`OffStore,WebStore`_ForceInstalledFailureReason3 equal to {ErrorType} and a HTTP response code was received. HTTP response code is received only if there was no network error. Replaced Extensions.ForceInstalledHttpErrorCode because error codes are now reported only when network error code is HTTP_RESPONSE_CODE_FAILURE. Histogram is in the process of being removed in favor of its incremented version that emits only on profile open for "user" profiles (profiles where people can install extensions, specifically profiles that can have non-component extensions installed). rdevlin.cronin@chromium.org extensions-core@chromium.org The total number of extensions that have an icon in the extension toolbar, including those that are unpinned and only show in the extensions menu. Measured once per (non-incognito) profile open. rdevlin.cronin@chromium.org extensions-core@chromium.org The total number of extensions that have an icon in the extension toolbar, including those that are unpinned and only show in the extensions menu. Measured once per "user" profile (profiles where people can install extensions, specifically profiles that can have non-component extensions installed) open.