sharminzaman@google.com tsergeant@chromium.org chromeos-apps-foundation-team@google.com desktop-pwas-team@google.com The actions taken by the user when they are viewing the app details of an app in App Management (chrome://os-settings/app-management). On Windows/Linux/MacOS AppManagement.AppDetailViews.WebApp is the view on chrome://app-settings page. sharminzaman@google.com tsergeant@chromium.org chromeos-apps-foundation-team@google.com The ways the user opens up the App Management interface. tsergeant@chromium.org chromeos-apps-foundation-team@google.com The time it takes for the first login flow of the App Preload service to complete with the final status of {Status}. This metric is recorded when the user logs in for the first time on a device and the App Preload service kicks off the first login flow. tsergeant@chromium.org chromeos-apps-foundation-team@google.com The combined http and net error codes the App Provisioning Server responds with after a request is made. tsergeant@chromium.org chromeos-apps-foundation-team@google.com The time between request and response made by the App Preload Service to the APS endpoint for the initial request which is performed the first time a user logs in. This is only recorded if the response is successful. tsergeant@chromium.org chromeos-apps-foundation-team@google.com The result code of the web app install command used to install a web app through the App Preload Service. This gives specific detail about errors within the web apps system. Recorded every time the App Preload Service attempts to install a web app (e.g. during OOBE). tsergeant@chromium.org chromeos-apps-foundation-team@google.com The overall result of installing a web app through the App Preload Service. Recorded every time the App Preload Service attempts to install a web app (e.g. during OOBE). nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Recorded the app window activated times for {AppType} in Chrome OS. This is logged when more than 24 hours pass after last log, or during the system startup phase if more than 24 hours passed after last log. dmurph@chromium.org desktop-pwas-team@google.com Records the result of creating shortcuts for a WebApp, specifically from the user clicking on "Create Shortcut" on the chrome://apps page, in the right click menu of the respective WebApp icon. tapted@chromium.org benwells@chromium.org The number of times v2 packaged apps are launched grouped by extension_misc::AppLaunchBuckets. See also Extensions.AppLaunch. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Records an app launch grouped by app type. This is recorded when an app is launched. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Records an app launch grouped by app type V2. This is recorded when an app is launched. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Records an app launch grouped by launch source. pdyson@chromium.org The number of apps the were not able to be ranked by the Aggregated ML app ranker (Top Cat). pdyson@chromium.org The number of apps successfully ranked by the Aggregated ML app ranker (Top Cat). thanhdng@chromium.org The type of errors that occur during the inference of Search Ranking aggregated model. jennyz@chromium.org newcomer@chromium.org The time between sending an answer card request and receiving the notification that answer card has finished loading. jennyz@chromium.org newcomer@chromium.org The time between sending an answer card request and receiving the notification navigation has been finished with a valid answer card. gzadina@google.com tbarzic@chromium.org The number of apps launched from different parts of the launcher (apps grid, search results UI, recent apps), and the shelf. Values are incremented each time the user launches an app. Each bucket represents where in the launcher or shelf the app was launched from. Recorded for {TabletOrClamshell}. andrewxu@chromium.org tbarzic@chromium.org The time duration between the earliest user session activation with the app list sort enabled and the first sort usage. This metric is recorded when app list sort is triggered. laurencom@chromium.org tbarzic@chromium.org The time between sending a non-empty query to AppSearchProvider and receiving results back. jennyz@chromium.org newcomer@chromium.org The time between sending an empty query to AppSearchProvider and receiving Zero State recommendation results back. anasalazar@chromium.org tbarzic@chromium.org Relative smoothness of animations of entering or exiting the cardified state in the apps grid. 100% represents ideally smooth 60 frames per second. 50% represents only 30 frames per second is achieved during the animations. 0% should not happen. This metric is recorded one time per apps grid page each time we enter or exit cardified state in the apps grid. {EnterOrExitCardifiedState} tby@chromium.org gzadina@chromium.org Recorded once upon login, records the state of the Disconnect Google Drive Account setting. Deprecated Feb 2022 in favor of Apps.AppList.Search.ContinueResultCount.Type. This histogram was recorded in the wrong place to be useful for counting how many Continue results the user sees, vs. how many the search backend is prepared to show. amandadeacon@chromium.org tby@chromium.org thanhdng@chromium.org Recorded on the first publication of zero-state results when opening the launcher. Records the number of {Type} results that are ready for display. Deprecated April 2022 in favor of Apps.AppList.Search.ContinueResultRemoved.Type. This histogram was recorded wrongly with the missing Search prefic. It is missing data for drive backed files. anasalazar@chromium.org tbarzic@chromium.org Records the type of a zero-state result when it is removed from the Continue section. Recorded once every time a result is removed. Chrome OS only. jamescook@chromium.org tbarzic@chromium.org Whether the user has manually hidden the productivity launcher "continue where you left off" section. Recorded once per launcher open. Split by clamshell vs. tablet mode. tby@chromium.org thanhdng@chromium.org How long it takes DriveFS to return search results. This is the first half of the I/O logic of the Drive provider. Logged once per Drive search query. tby@chromium.org thanhdng@chromium.org How long it takes to generate on-disk file paths for search results. This is the second half of the I/O logic of the Drive provider. Logged once per Drive search query. tby@chromium.org thanhdng@chromium.org Latency in milliseconds from the beginning of a launcher search query to Drive file results being returned. Logged once per Drive search query. This should roughly equal DriveFSLatency + FileInfoLatency for each query. tby@chromium.org thanhdng@chromium.org Relevance score for a Drive file result that was returned in response to a search query. Logged once for each file per search query. tby@chromium.org thanhdng@chromium.org The outcome of a query for Drive file results. Logged once per Drive search query. tby@chromium.org thanhdng@chromium.org The time between sending a zero state query and receiving file recommendations back from DriveZeroStateProvider. Deprecated September 2022, now that it's replaced by Ash.Search.DriveFileSuggestDataValidation.Status tby@chromium.org thanhdng@chromium.org The outcome of a query for search results from DriverZeroStateProvider. Recorded once per zero-state query. tby@chromium.org thanhdng@chromium.org Whether or not the default relevance was used when calculating the relevance score between a filename and the search query. The default relevance is used as a fallback whenever the relevance calculation fails. Logged once per relevance calculation. tby@chromium.org thanhdng@chromium.org Result of requesting a thumbnail icon for some types of file results in the Chrome OS launcher. Emitted on each attempt to load a thumbnail, if it results in an error. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Latency in milliseconds from the beginning of a launcher search query to local file results being returned. Logged once per file search query. tby@chromium.org thanhdng@chromium.org Relevance score for a local file result that was returned in response to a search query. Logged once for each file per search query. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Whether or not local file search was exited early due to a time out. Logged once per file search query. laurencom@chromium.org amandadeacon@chromium.org The outcome of a query for game results. Logged once per game search query. laurencom@chromium.org amandadeacon@chromium.org The outcome of an index update from the Discovery service. Logged once per update. amandadeacon@chromium.org chenjih@chromium.org The outcome of the icon load from the Discovery service. Logged once per icon loaded in game result. tby@chromium.org thanhdng@chromium.org zufeng@google.com The end result of list searches by the provider for the help app in the CrOS launcher. Logged once per time a list search finishes. Not logged if the search is canceled by a new search starting. Not logged for the help app provider's suggestion chips. Chrome OS only. thanhdng@chromium.org tby@chromium.org zufeng@google.com The latency of a search in the HelpAppProvider. Recorded each time a search is completed, even if it returns no results. Not recorded if the query is too short to perform a search at all. Chrome OS only. tby@chromium.org thanhdng@chromium.org Records the size of a response from the ItemSuggest API. Reported once per successful response. Will not be reported if the response exceeds the maximum size, instead check Apps.AppList.ItemSuggestCache.Status. tby@chromium.org thanhdng@chromium.org Records the outcome of a call to ItemSuggest. Reported once per call to UpdateCache that passes the minimum time between udpates check. tby@chromium.org thanhdng@chromium.org Records the latency from the start of a call to UpdateCache to the time when results are finalised. Reported once each time results are successfully obtained, which corresponds to a kOk status being recorded in Apps.AppList.ItemSuggestCache.Status. laurencom@chromium.org amandadeacon@chromium.org Records the number of keyword tokens that are detected in a user query. Reported once each time for each query generated. tbarzic@chromium.org gzadina@google.com Type of the result that a user opened during their first launcher search in their first user session on the device. It includes a bucket for the case the user does not launch any results. tbarzic@chromium.org mmourgos@chromium.org gzadina@google.com The number of apps which exist within the launcher app list. This number also includes apps within folders. This metric is recorded every 30 minutes. tbarzic@chromium.org jamescook@chromium.org mmourgos@chromium.org The total number of apps in folders ignoring system-created folders like the OEM folder and the Linux apps folder. Recorded every 30 minutes. tbarzic@chromium.org jamescook@chromium.org mmourgos@chromium.org The number of folders that users have in their Launcher. Includes system-created folders like the OEM folder and the Linux apps folder. Recorded every 30 minutes. tbarzic@chromium.org jamescook@chromium.org The number of folders that users have in their launcher. Does not include system-created folders like the OEM folder and the Linux apps folder. Recorded every 30 minutes. tbarzic@chromium.org mmourgos@chromium.org gzadina@google.com The number of items which exist within the root level of the app list. This number includes both app items and folder items. Apps within folders are not included. This metric is recorded every 30 minutes. laurencom@chromium.org tbarzic@chromium.org The time between sending an non-empty query and receiving search results back from OmniboxProvider which queries chrome AutocompelteController's search providers to get the results. tby@chromium.org thanhdng@chromium.org Various error states of the provider for OS settings in the cros launcher. Emitted either the case of an unexpected error or an successful non-empty query search. The bucket proportion is not meaningful as overlaps can occur among errors. Instead, the ratio between each error bucket and the successful query search can be used to calculate the accurate error rate. tby@chromium.org chenjih@chromium.org Various states of the icon related parameters for OS settings in the cros launcher. Emitted at each branch to help investigate the cause of icon load failures. The bucket proportion is not meaningful as overlaps can occur among status. Instead, the ratio between states can be used to calculate how the flow is divided into sub-branches. thanhdng@chromium.org tby@chromium.org The latency of a search in the OsSettingsProvider. Recorded each time a search is completed, even if it returns no results. Not recorded if the query is too short to perform a search at all. Chrome OS only. tby@chromium.org thanhdng@chromium.org Various error states on reading a backing file from disk, in the score normalizer used by the Chrome OS launcher. Emitted once when a persistent proto initially reads from disk. Some number of Missing values are expected, eg. because it is logged for each new user added to a device. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Various error states on writing a backing file to disk, in the score normalizer used by the Chrome OS launcher. Emitted each time a persistent proto writes to disk. cowmoo@google.com assistive-eng@google.com The latency of a search in the PersonalizationProvider. Recorded each time a search is completed, even if it returns no results. Not recorded if the query is too short to perform a search at all. Chrome OS only. andrewxu@chromium.org tby@chromium.org Record the size of the removed results proto in KB. Emitted when the proto initialization completes. amandadeacon@chromium.org laurencom@chromium.org The number of the results above the BestMatch threshold with {Type} case. Recorded once per result's score above the BestMatch threshold. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Recorded when the user has seen the zero-state launcher. Records the number of {Type} results shown. anasalazar@chromium.org tbarzic@chromium.org Records the type of a zero-state result when it is removed from the Continue section. Recorded once every time a result is removed. Chrome OS only. anasalazar@chromium.org tbarzic@chromium.org Represents the number of file suggestions removed per user per session in the in ChromeOS launcher UI. Recorded every time the user removes a suggestion. Each bucket represents the total number of suggestions removed within the user session at the time the histogram is recorded. If the user removes total of n files, histogram will have recorded all of 1, 2, 3, ..., n values. We also record 0 count during session end if no suggestions have been removed. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Recorded when the user has seen the zero-state launcher. Records whether or not the user would have seen any Drive files. This is equivalent to Apps.AppList.Search.ContinueResultCount.Drive greater than 0. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Records errors in processing other Apps.AppList.Search.* metrics. These are expected to be rare and bucket proportion is not meaningful. amandadeacon@chromium.org alanlxl@chromium.org Emitted on usage of launcher search. Records overall impressions, launches, abandons, and ignores, for the query list view when federated analytics is enabled. Impression. Emitted if either a) the view is displayed for 2 seconds or b) the user interacted with a result, eg. by clicking it. Launch. Emitted after an impression, if a result is clicked in the query list view. Abandon. Emitted after an impression, if the user closes the launcher or moves to another UI view. Ignore. Emitted after an impression, if the user launches a result from a different currently visible UI view. amandadeacon@chromium.org alanlxl@chromium.org Records status in initialization of federated analytics. These are expected to be rare, and the bucket proportion is not meaningful. amandadeacon@chromium.org alanlxl@chromium.org Records status in reporting of federated analytics examples. These are expected to be rare, and the bucket proportion is not meaningful. amandadeacon@chromium.org tby@chromium.org Tracks the conclusion of each search session starting from the search box. Records launcher dismissals ("quit"), launches, and viewings of answer card results, for the query list view when federated analytics is enabled. Quit. Emitted if the user dismisses search without launching a result or seeing an answer card. Launch. Emitted if the user launches a search result. AnswerCardSeen. Emitted if an answer card is displayed for some threshold period of time, and the user then dismisses the launcher without launching a result. yulunwu@chromium.org tby@chromium.org tbarzic@chromium.org Records errors in processing other Apps.AppList.Search.Session2.* metrics. These are expected to be rare and bucket proportion is not meaningful. yulunwu@chromium.org tby@chromium.org tbarzic@chromium.org Tracks search result launches, answer card impressions, and search session abandons for launcher search sessions. A search session is started when a query is entered into the bubble launcher search box or when the tablet mode device enters the kFullscreenSearch AppListViewState. Each search session must conclude one of following ways: Quit: Recorded when ending a search session without launching a result and no answer card was shown long enough to have make an impression. Launch: Recorded when a search session is ended by launching a result. An answer card may or may not have been shown long enough to make an impression. AnswerCardImpression: An answer card was shown long enough to the user to have made an impression at some point during the search session. The answer card may or may not be shown at the moment the search session ended. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Emitted on a usage of launcher search, and records overall impressions, launches, abandons, and ignores for the {SearchView} view. Launch. Emitted after an impression, if a result is clicked in the {SearchView} view. Abandon. Emitted after an impression, if the user closes the launcher or moves to another UI view. Ignore. Emitted after an impression, if the user launches a result from a different currently visible UI view. Impression. Emitted if either a) the view is displayed for 2 seconds or b) the user interacted with a result, eg. by clicking it. The bucket proportion is not meaningful, because impressions are a superset of the other buckets. Instead, the ratio between buckets is meaningful. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Emitted when launching a search result. Records the index of the launched result in the {SearchView} view. The top-most result is index zero. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Tracks launches, impressions, abandons, and ignores for search result types in the launcher. This histogram is specific to the {SearchView} view. These metrics are all emitted once for each unique displayed search result type, and records that search result type. For example, if we show the user three files and two apps, and the user clicks a file, then we would record: one file impression and one app impression, one file launch, and one app ignore. Launch. Emitted after an impression, if the user launches a result. Abandon. Emitted after an impression, if the user closes the launcher or moves to a different view. Ignore. Emitted after an impression, if the user then launched a different result. Impression. Emitted if either a) a set of results is displayed for 2 seconds or b) the user interacted with a result, eg. by clicking it. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com The length of the query that resulted in an app launch from search box. This metric only records non-empty queries. tbarzic@chromium.org gzadina@google.com The decision of the user whether to remove a search result from search results UI when productivity launcher is enabled. When productivity launcher is enabled, the user has an option to remove subset of omnibox results from search results. When removing the result, the user is shown a dialog to confirm or cancel result removal. This histogram record the user action in that dialog. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com The number of app launches from the search box with non-empty queries. This was updated in 12/2022 to include more result types that were apps. andrewxu@chromium.org tbarzic@chromium.org The time duration between showing the app list sort education nudge and the first sort usage. This metric is recorded when app list sort is triggered after the sort nudge is shown. andrewxu@chromium.org tbarzic@chromium.org The time duration between showing the app list sort education nudge and the first sort usage. This metric is recorded when app list sort is triggered after the sort nudge is shown. The collected data are separated by the tablet mode state under which the sort nudge is shown. In detail, if the sort nudge shows initially in tablet (or clamshell), then the discovery duration is reported using the histogram for tablet (or clamshell). andrewxu@chromium.org chromeos-launcher@google.com The app list sort order preserved in the pref service. Triggered when the pref service for the new session is ready. gzadina@google.com tbarzic@chromium.org Whether the user successfully used the launcher when they opened it for the first time. Successful usage entails launching an app, or search result from the launcher UI. Only recorded in user session started after creating a new account on the device. Split by whether the launcher was first shown in clamshell or tablet mode. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com Whether or not the user has enabled Suggested Content in the launcher. This is logged once per UMA upload, and only for any user that has the Suggested Content toggle feature flag enabled. Warning: this histogram was expired from 2023-06-04 to 2023-08-18; data may be missing. laurencom@google.com tby@google.com Records the ProbeError::ErrorType returned on request for {ProbeErrorSourceStruct}. Recorded on the event a request to cros_healthd probe service returns a ProbeError. This can occur when a request is made to the CrosHealthdProbeService within the System Info Provider. laurencom@google.com tby@google.com Records error type such as no data error, not a number error and expectation not met error when receiving system information including battery info, network info and system info. All errors are recorded. gzadina@google.com tbarzic@chromium.org Amount of time passed from when the launcher was shown to the user performing a launcher workflow action, which includes launching an app from the apps grid, launching an app from recent apps section, opening a search result, or opening a task in continue section. Logged when the user performs an action. Recorded for {TabletOrClamshell}. gzadina@google.com tbarzic@chromium.org Tracks different launcher worflow actions the user performs in the launcher. Logged when the user performs an action. Recorded for {TabletOrClamshell}. tby@chromium.org thanhdng@chromium.org Emitted on a usage of the launcher, and records overall impressions, launches, and abandons for a launcher UI view. The bucket proportion is not meaningful for this metric, because impressions are a superset of launches and abandons. Instead, the ratio between buckets can be used to calculate accurate overall CTR. {LauncherUISurface} This metric stopped collecting data in November 2021, but has not yet been marked obsolete because the historical data is still being used for analysis. tby@chromium.org thanhdng@chromium.org Emitted on a usage of the launcher, and records overall impressions, launches, and abandons for a launcher UI view. The bucket proportion is not meaningful for this metric, because impressions are a superset of launches and abandons. Instead, the ratio between buckets can be used to calculate accurate overall CTR. {LauncherUISurface} This metric stopped collecting data in November 2021, but has not yet been marked obsolete because the historical data is still being used for analysis. tby@chromium.org thanhdng@chromium.org Emits true when the user enters a query into the Chrome OS launcher search box. Entering any number of characters is considered only one query, but deleting the contents of the search box and starting again is recorded as a new query. This metric stopped collecting data in November 2021, but has not yet been marked obsolete because the historical data is still being used for analysis. tby@chromium.org thanhdng@chromium.org Emitted after an impression, if the user then closes the launcher or moves to a different view without launching any search result. This is emitted once per abandon, per displayed result. Records the displayed result's type. See Apps.AppList.UserEvent.TypeImpression for more details. This metric is completed by a histogram suffix describing which UI surface the results are recorded from. {LauncherUISurface} This metric stopped collecting data in November 2021, but has not yet been marked obsolete because the historical data is still being used for analysis. tby@chromium.org thanhdng@chromium.org When a set of results is displayed for 2 seconds and the user has probably seen it, or the user interacted with the results and has definitely seen it, we consider it an impression. Emitted once per impression for each displayed result. Records the type of the displayed result, eg. native app or omnibox bookmark. The Apps.AppList.UserEvent.Type* metrics are directly comparable per-result-type. So, for example, (launches / impressions) for a result type gives an accurate CTR. This metric is completed by a histogram suffix describing which UI surface the results are recorded from. {LauncherUISurface} This metric stopped collecting data in November 2021, but has not yet been marked obsolete because the historical data is still being used for analysis. tby@chromium.org thanhdng@chromium.org Emitted after an impression, if the user launches a result. Records the type of the launched result. See Apps.AppList.UserEvent.TypeImpression for more details. This metric is completed by a histogram suffix describing which UI surface the results are recorded from. {LauncherUISurface} This metric stopped collecting data in November 2021, but has not yet been marked obsolete because the historical data is still being used for analysis. tby@chromium.org thanhdng@chromium.org Relevance score for a zero state Drive result in the results list. Logged whenever ItemSuggest is queried, once for each zero-state result created. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com The time between sending a zero state query and receiving file recommendations back from the ZeroStateFileProvider. tby@chromium.org thanhdng@chromium.org Relevance score for a zero state file result in suggestion chips or the results list. Logged once each time zero state is loaded. dgrebenyuk@google.com ypitsishin@google.com chromeos-launcher-search@google.com The type of item that was launched from a zero state launcher search result. jennyz@chromium.org newcomer@chromium.org The type of the app list suggestion that was opened by user in zero state. tbarzic@chromium.org mmourgos@chromium.org newcomer@chromium.org The number of apps launched from the launcher and shelf for each launcher state. This is incremented each time an app is launched. Each bucket represents where in the launcher or shelf the app was launched from. {AppListState} tbarzic@chromium.org mmourgos@chromium.org newcomer@chromium.org The different ways to move an app in app list's apps grid. Logged when the app moving succeeds. charleszhao@chromium.org pdyson@chromium.org The type of app clicked in the launcher on ChromeOS, recorded after the icon is clicked, before it is launched. tbarzic@chromium.org wcwang@chromium.org chromeos-launcher@google.com The different ways to move an app in app list's apps grid, specifically for the scrollable apps grid in bubble launcher. Logged when the app moving succeeds. tbarzic@chromium.org wcwang@chromium.org chromeos-launcher@google.com The amount of time it takes to build the app list bubble UI. This is logged each time the app list bubble gets shown. tbarzic@chromium.org newcomer@chromium.org chromeos-launcher@google.com The number of times the different sources for showing the bubble app list are used. This is logged when the bubble app list is shown, which only exists in clamshell mode. See sister metric "Apps.AppListShowSource" for tablet mode and fullscreen app list metrics. anasalazar@chromium.org tbarzic@chromium.org The type of app list continue search result that was opened by the user. This is gathered per continue section task opened. tbarzic@chromium.org mmourgos@chromium.org The amount of time it takes to build the app list UI. This is logged each time the app list is built from scratch. jennyz@chromium.org newcomer@chromium.org The type of the default result opened by user by pressing ENTER key. Launcher UI shows suggested apps, recent queries, etc when user activates the search box, or shows matched apps (installed apps, play store app results, etc.) and other results (query suggestions, web site, bookmark, files, etc) when user types a query. It will set the focus on the first result as the default. User can open the default result by simply pressing ENTER key. This metrics logs the type of the default result (installed app, play store result, query suggestion, etc) opened by user pressing ENTER key. tbarzic@chromium.org jamescook@chromium.org chromeos-launcher@google.com Relative smoothness of animations of showing and hiding app list folder. 100% represents ideally smooth 60 frames per second. 50% represents only 30 frames per second is achieved during the animations. 0% should not happen. This metric is recorded exactly once when the user starts the folder animation in the launcher. Warning: this histogram was expired from 2021-08-29 to 2021-09-28; data may be missing. mmourgos@chromium.org tbarzic@chromium.org newcomer@chromium.org The folder name length in characters when an app list folder gets renamed. Logged when the folder name is changed and the texfield is no longer in focus. mmourgos@chromium.org tbarzic@chromium.org newcomer@chromium.org The number of times folders are opened in the app list. This is logged when the folder is clicked. newcomer@chromium.org tbarzic@chromium.org mmourgos@chromium.org Elapsed time from the input event to hide the launcher UI. This is logged each time the launcher is dismissed by pressing search key, clicking shelf button, or focusing out side of the launcher. laurencom@chromium.org tby@chromium.org Logs the length of user typed queries that result in launcher clicks. Emitted each time the user opens a launcher search result after typing a query. jennyz@chromium.org tbarzic@chromium.org newcomer@chromium.org The UMA histogram that logs the length of user typed queries app list launcher issues to the search providers. angusmclean@chromium.org tbarzic@chromium.org src/ash/app_list/OWNERS The time a user spends with the AppList open after opening it using the {OpenMethod} method. tbarzic@chromium.org newcomer@chromium.org mmourgos@chromium.org The source used to switch pages in the app list's app grid. Logged when the page switch succeeds. Deprecated in M108. Tiled app results are no longer shown. jennyz@chromium.org newcomer@chromium.org The index of the app within all play store apps displayed when it is launched. tby@chromium.org ypitsishin@google.com chrome-knowledge-eng@google.com The state of a Play Store app search request. Deprecated in M108. Tiled app results are no longer shown. jennyz@chromium.org newcomer@chromium.org Deprecated in Oct 2022. The number of the play store apps displayed to user as tile items for a query. napper@chromium.org robsc@chromium.org thanhdng@chromium.org Response when parsing the recommended app list from Play Store for candidate app list, recorded every time a response from the play store is parsed in client. napper@chromium.org robsc@chromium.org thanhdng@chromium.org Number of responses from server in Apps.AppListRecommendedResponse.count when fetching appListRecommendded GetAppReinstallCandidates. napper@chromium.org robsc@chromium.org thanhdng@chromium.org Milliseconds elapsed to fetch appListRecommended GetAppReinstallCandidates. yulunwu@chromium.org tbarzic@chromium.org The outcome of app list search attempting to autocomplete queries by matching user entered text with search result text. This metric is split by prefix match, substring match, and no match. This is gathered each time app list attempts to perform an autocomplete. Deprecated in July 2022. Replaced with Apps.AppListSearchQueryLenghtV2, which, unlike this histogram, only records query length for results from launcher search results UI. Apps.AppListSearchQueryLength was recording query length when launching results from continue section. yulunwu@chromium.org calamity@chromium.org The length of the app list search query when a result is opened. This is gathered per click of a search result. yulunwu@chromium.org calamity@chromium.org The length of the app list search query when a result is opened. This is gathered per click of a search result in launcher search results UI. tbarzic@chromium.org newcomer@chromium.org mmourgos@chromium.org The type of app list search result that was opened by the user. This is gathered per SearchResult opened. Only recorded for search results shown in the search result page of the launcher (suggestion chips are not recorded). tbarzic@chromium.org newcomer@chromium.org mmourgos@chromium.org Elapsed time from the input event to show the launcher UI. This is logged each time the app list is shown by pressing search key, clicking shelf button, or swiping from shelf. tbarzic@chromium.org newcomer@chromium.org The number of times the different sources for showing the app list are used. This is logged when the app list is shown. Does not count the app list shown when the last window is closed in tablet mode. This is not the total number of times the app list is shown to the user; for that consult the user action AppList_WindowFocused. andrewxu@chromium.org tbarzic@chromium.org Records the launcher usage state during the session started by a new user (i.e. the session completing the OOBE flow). This metric is recorded in the following scenarios: (1) the launcher shows and the current user is new (2) the launcher has never shown before launcher is destructed. Destruction can be triggered by loging out accounts, shuting down the device or system crashes and meanwhile the current user is new (3) the launcher has never shown when the active user has changed and the previous active user was a new user. Split depending on whether the device was in tablet or clamshell mode when the metric was recorded. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Platform>Apps>Foundation The total number of installed {AppType} for each app type in Chrome OS. This is logged when more than 24 hours pass after last log, or during the system startup phase if more than 24 hours passed after last log. This histogram is capped at 1000; values above this go into the overflow bucket. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Platform>Apps>Foundation The total number of installed {AppType} for each app type {InstallReason} in Chrome OS. This is logged when more than 24 hours pass after last log, or during the system startup phase if more than 24 hours passed after last log. This histogram is capped at 1000; values above this go into the overflow bucket. Deprecated in May 2022. Replaced with Apps.AppList.NumberOfAppsInNonSystemFolders, which is recorded periodically, for consistency with other app list metrics. mmourgos@chromium.org newcomer@chromium.org The total number of apps in folders ignoring OEM folders. This is logged each time the app list is initialized. The "FullscreenAppListDisabled" suffix has been deprecated. {AppListFolderExperiment} nancylingwang@chromium.org sstan@chromium.org Records whether the ARC ghost window is launched when the ARC app are restored during the system startup phase. tbarzic@chromium.org jamescook@chromium.org chromeos-launcher@google.com Emitted when the clamshell launcher {Transition} animation completes. Reports the smoothness of this animation. 100% represents the ideally smooth 60 frames per second. tbarzic@chromium.org newcomer@chromium.org mmourgos@chromium.org The number of times a certain command was executed by a context menu, split by whether the context menu came from an app, or another part of the system UI. {ContextMenuFromApp} wcwang@chromium.org mmourgos@chromium.org tbarzic@chromium.org The show source (touch, mouse, keyboard, etc) for a context menu. Split by the component from which the context menu originated. {AppUIComponent} wcwang@chromium.org mmourgos@chromium.org tbarzic@chromium.org The user journey time for a ContextMenu, defined as the time between launching a context menu and the context menu's close callback being activated. Not recorded whenever the context menu is not for an app icon on the shelf. {AppUIComponent} estade@chromium.org desktop-pwas-team@google.com Records the result of creating shortcut image for web app on Linux. phillis@chromium.org cmumford@chromium.org Records the result of creating shortcut for web app on Linux. phillis@chromium.org cmumford@chromium.org Records the result of creating shortcut for web app on MacOS. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com cros-peripherals@google.com Platform>Apps>Foundation Records when a user attempts to launch a particular Chrome OS app. {DefaultAppLaunchSource} estade@chromium.org desktop-pwas-team@google.com Records the result of MIME info database update when enabling an app's use of the PWA File Handling API estade@chromium.org desktop-pwas-team@google.com Records the result of file handler registration for PWA on Windows estade@chromium.org desktop-pwas-team@google.com Records the result of MIME info database update when disabling an app's use of the PWA File Handling API Deprecated in M103. Replaced with Apps.NewUserFirstLauncherAction. andrewxu@chromium.org tbarzic@chromium.org Records which launcher action a new user takes for the first time within a session. Launcher actions include the following: activating a launcher app and opening a search result from either a launcher suggestion chip or the search box. The metric is recorded when a launcher action performs on a new user's session for the first time. Split depending on whether the first launcher action occurred in clamshell or tablet mode. sammiequon@chromium.org fanafan@chromium.org Records the number of tabs restored by full restore. Note that this is not recorded for lacros browsers. sammiequon@chromium.org fanafan@chromium.org Records the number of windows restored by full restore. andrewxu@chromium.org tbarzic@chromium.org newcomer@chromium.org Relative smoothness of animations of launcher transitions in tablet mode. 100% represents ideally smooth 60 frames per second. 50% represents only 30 frames per second is achieved during the animations. 0% should not happen. This metric is recorded exactly once when the user triggers launcher animation in tablet mode. {AppListTabletModeTransition} nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Records the app icon loading method when loading app icons. andrewxu@chromium.org chromeos-launcher@google.com The events that reset the app list pref sort order. Triggered when the pref sort order is reset. mmourgos@chromium.org chromeos-launcher@google.com Emitted when an app list drag reorder animation completes. Reports the smoothness of this animation. 100% represents the ideally smooth 60 frames per second. andrewxu@chromium.org chromeos-launcher@google.com The user-set sort order of the productivity launcher. Triggered when the launcher is set with a new order. andrewxu@chromium.org chromeos-launcher@google.com Emitted when the app list sort reorder animation completes. Reports the smoothness of this animation. 100% represents the ideally smooth 60 frames per second. tapted@chromium.org patricialor@chromium.org The number of other media app windows that exist when a new media app window is created. Counts windows open with any supported file type, or in the "zero state" (with no open file). andrewxu@chromium.org tbarzic@chromium.org Records which launcher action a new user takes for the first time within a session. Launcher actions include the following: activating a launcher app, opening a search result from either a launcher suggestion chip or the search box, or triggering an app from the continue section. The metric is recorded when a launcher action performs on a new user's session for the first time. Split depending on whether the first launcher action occurred in clamshell or tablet mode. glenrob@chromium.org tbuckley@chromium.org The result of attempting to launch a default note-taking app on Chrome OS. Only reported if the preferred app was unspecified or failed to launch. glenrob@chromium.org tbuckley@chromium.org The result of attempting to launch the user-specified preferred note-taking app, if any, on Chrome OS. Deprecated in May 2022. Replaced with Apps.AppList.NumberOfFolders, which is recorded periodically, for consistency with other app list metrics. tbarzic@chromium.org mmourgos@chromium.org newcomer@chromium.org The number of folders that users have in their Launcher. Includes system-created folders like "Linux apps" or the OEM folder. Recorded every time the launcher is shown. Deprecated in May 2022. Replaced with Apps.AppList.NumberOfNonSystemFolders, which is recorded periodically, for consistency with other app list metrics. tbarzic@chromium.org jamescook@chromium.org newcomer@chromium.org The number of folders that users have in their launcher. Does not include system-created folders like "Linux apps" or the OEM folder. Recorded every time the launcher is shown. mmourgos@chromium.org tbarzic@chromium.org newcomer@chromium.org The number of pages that users have in the top level apps grid of their Launcher. This metric is recorded every time the launcher is shown. andrewxu@chromium.org tbarzic@chromium.org Records the opened launcher search results from the search box. Data is gathered when a search result is opened from the search box. {AnyNonAppBrowserWindowOpenAndNotMinimized} denotes whether there is any non-app browser window open and not minimized when a search result is opened. tbarzic@chromium.org newcomer@chromium.org wutao@chromium.org Relative smoothness of animations of launcher pagination transitions. 100% represents ideally smooth 60 frames per second. 50% represents only 30 frames per second is achieved during the animations. 0% should not happen. This metric is recorded exactly once when the user starts the pagination transition animation of the launcher. omrilio@chromium.org tbarzic@chromium.org newcomer@chromium.org Presentation time for the apps grid scrolling operation. This starts when drag starts by gesture and ends before the patination animation starts. The smoothness of the pagination animation is recorded in Apps.PaginationTransition.AnimationSmoothness.{TabletMode|ClamshellMode}. omrilio@chromium.org tbarzic@chromium.org newcomer@chromium.org Maximum latecy reported during one drag to scroll operation on apps grid. mxcai@chromium.org chromeos-apps-foundation-team@google.com Records the number of entries in the preferred apps list that was stored on the disk. The preferred apps list is a vector that identifies the preferred app for an intent filter. This value is recorded every time on user login and we read the stored data from the disk. mmourgos@chromium.org src/ash/app_list/OWNERS The amount of time it takes for a quick app's icon to be loaded (The quick app is an app icon button that, when set, appears directly next to the home button). This is logged any time an icon is null and gets loaded for a newly set quick app. nancylingwang@chromium.org sstan@chromium.org Records whether all Arc app windows have been restored. This is logged when the restoration process finishes during the system startup phase. nancylingwang@chromium.org sstan@chromium.org Records restoration result states of Arc apps. This is logged when the restoration process finishes during the system startup phase. nancylingwang@chromium.org sstan@chromium.org Records the number of restored ARC app windows in Chrome OS. This is logged during the system startup phase. This histogram is capped at 100; values above this go into the overflow bucket. nancylingwang@chromium.org sammiequon@chromium.org Records the browser restore result, whether tabs can be restored, when the browser is restored during the system startup phase. nancylingwang@chromium.org sammiequon@chromium.org Records the number of app launching restored grouped by app type, when the system startup. nancylingwang@chromium.org sammiequon@chromium.org Records user actions on the full restore for crash notification, when the notification is closed. nancylingwang@chromium.org sammiequon@chromium.org Records the restore apps and pages preference setting, when a profile is loaded. nancylingwang@chromium.org sammiequon@chromium.org Records user actions on the full restore notification, when the notification is closed. nancylingwang@chromium.org sammiequon@chromium.org Records the restore apps and pages preference setting, when the preference setting is changed. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Platform>Apps>Foundation Recorded the app running duration for {AppType} in Chrome OS. This is logged when more than 24 hours pass after last log, or during the system startup phase if more than 24 hours passed after last log. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Recorded the app running duration percentage for {AppType} in Chrome OS. This is logged when more than 24 hours pass after last log, or during the system startup phase if more than 24 hours passed after last log. tbarzic@chromium.org anasalazar@chromium.org newcomer@chromium.org Relative smoothness of animations of the scrollable shelf when scrolling. 100% represents ideally smooth 60 frames per second. 50% represents only 30 frames per second is achieved during the animations. 0% should not happen. This metric is recorded exactly once when the user scrolls over the scrollable shelf. {HomeLauncherVisibility} tbarzic@chromium.org anasalazar@chromium.org newcomer@chromium.org Maximum latency of the presentation time of the drag scroll in the scrollable shelf. {HomeLauncherVisibility} tbarzic@chromium.org anasalazar@chromium.org newcomer@chromium.org Presentation time of the drag scroll in the scrollable shelf in milliseconds. Warning: This histogram was expired from 2021-01-10 to 2022-06-02; data may be missing. {HomeLauncherVisibility} nancylingwang@chromium.org sammiequon@chromium.org Records the last session restore exit result. This is logged when the restoration process finishes during the system startup phase. nancylingwang@chromium.org sammiequon@chromium.org Records the restored browser window count from session restore. This is logged when the restoration process finishes during the system startup phase. tbarzic@chromium.org newcomer@chromium.org src/ash/app_list/OWNERS Relative smoothness of animations of tablet mode launcher state transitions. 100% represents ideally smooth 60 frames per second. 50% represents only 30 frames per second is achieved during the animations. 0% should not happen. This metric is recorded exactly once when the user switches states of the launcher. tbarzic@chromium.org jamescook@chromium.org chromeos-launcher@google.com Time between when an app is installed and when the user launches the app. Recorded the first time the user launches the app. The clamshell or tablet mode state is the state when the app is launched. andrewxu@chromium.org tbarzic@chromium.org The time duration between session activation and the first launcher action on a new user session. Launcher actions include the following: activating a launcher app and opening a search result from either a launcher suggestion chip or the search box. This metric is recorded when a new user triggers the launcher action for the first time. andrewxu@chromium.org tbarzic@chromium.org The time duration between session activation and opening the Launcher for the first time on a new user session. This metric is recorded when a new user opens the laucnher for the first time. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Platform>Apps>Foundation Records the amount of time that {AppType} were used in the last five minutes on Chrome OS. This is logged every five minutes. nancylingwang@chromium.org chromeos-apps-foundation-team@google.com Platform>Apps>Foundation Records the amount of time that {AppTypeV2} were used in the last five minutes on Chrome OS. This is logged every five minutes.