ajgo@chromium.org anunoy@chromium.org Result of polling for the installed version of Chrome. Logged once at startup then approximately every two hours. robliao@chromium.org pkasting@chromium.org Recorded only for Windows on every primary button mouse down determined to be in the caption area of Chrome. True if the primary button mouse down was in the reserved grab handle space, false otherwise. kvitekp@chromium.org headless-owners@chromium.org Records headless chrome action, e.g. remote debugging, screenshot, print to PDF, DOM dump. Reported once when the browser process is launched in headless mode. If more than one action is requested only one will be reported. behamilton@google.com pauljensen@chromium.org Track execution of KAnonymity Service JoinSet requests for both normal operation and errors. The kJoinSet enumeration is emitted when the service is called and either kJoinSetSuccess or one of the error enumerations is emitted at the end of the request. behamilton@google.com pauljensen@chromium.org Records the length of time the K-Anonymity service spends processing a JoinSet request. This includes time taking waiting in the JoinSet queue, getting a trust token (if necessary), performing the request, and waiting for the response. This metric is only measured for successful requests. behamilton@google.com pauljensen@chromium.org Track execution of KAnonymity Service QuerySet requests for both normal operation and errors. The kQuerySet enumeration is emitted when the service is called and either kQuerySetsSuccess or one of the error enumerations is emitted at the end of the request. behamilton@google.com pauljensen@chromium.org Records the length of time the K-Anonymity service spends processing a QuerySet request. This includes time taking waiting in the QuerySet queue, formatting the request, performing the request, waiting for the response, and parsing the response. This metric is only measured for successful requests. behamilton@google.com pauljensen@chromium.org Records the number of elements queried per call for each call to QuerySet. behamilton@google.com pauljensen@chromium.org Track execution of KAnonymityTrustTokenGetter requests for both normal operation and errors. The kTryGetTrustTokenAndKey enumeration is emitted when the service is called and either kGetTrustTokenSuccess or one of the error enumerations is emitted at the end of the request. behamilton@google.com pauljensen@chromium.org Records how the length of time the K-Anonymity service spends fetching trust tokens. This includes time taken waiting in the TrustTokenGetter queue, getting the OAuth token, getting the key commitment, and requesting the trust token. This metric is only measured for successful requests. This metric is reported on every dropped frame instead of every frame. It is deprecated in favor of Chrome.Lacros.Smoothness.PercentDroppedFrames_1sWindow2 xiyuan@chromium.org cros-sw-perf@google.com Similar to Ash.Smoothness.PercentDroppedFrames_1sWindow but emitted for the browser UI of lacros-chrome. xiyuan@chromium.org cros-sw-perf@google.com Similar to Ash.Smoothness.PercentDroppedFrames_1sWindow2 but emitted for the browser UI of lacros-chrome. gab@chromium.org etienneb@chromium.org The result of every rendez-vous reported once per browser process launch. gab@chromium.org etienneb@chromium.org The reason of remote hang processes termination. gab@chromium.org etienneb@chromium.org Used to send the result of interaction with remote process as histograms in case when remote process influences on start. gab@chromium.org etienneb@chromium.org The error code of remote process termination on Posix in case when remote process hung. gab@chromium.org etienneb@chromium.org The error code of remote process termination on Windows in case when remote process hung. gab@chromium.org etienneb@chromium.org Time it takes from TerminateProcess call to the moment when we stop waiting for remote process switches to signal state. gab@chromium.org etienneb@chromium.org The error code of wating for remote process termination on Windows. etienneb@chromium.org gab@chromium.org Time it takes to grab the process singleton. Reported once per successful attempt at obtaining the singleton. etienneb@chromium.org gab@chromium.org Time it takes to return an error from the process singleton algorithm (nor succeeding in obtaining it, nor in generating a rendez-vous). This does not include time spent in the fast notification path (chrome_exe_main_win.cc). etienneb@chromium.org gab@chromium.org Time it takes to find the process singleton owner and notify it. Reported once per successful rendez-vous. This does not include time spent in the fast notification path (chrome_exe_main_win.cc). wfh@chromium.org mmenke@chromium.org The platform-specific error code returned from a failed attempt to launch the network service process sandboxed. This is recorded if an attempt is made to launch a sandboxed network service process, and the launch fails. See also ChildProcess.LaunchFailed.UtilityProcessErrorCode. wfh@chromium.org mmenke@chromium.org The Windows last error obtained from a call to GetLastError after a failed attempt to launch the network service process sandboxed. This is recorded if an attempt is made to launch a sandboxed network service process on Windows, and the launch fails. See also ChildProcess.LaunchFailed.WinLastError. wfh@chromium.org mmenke@chromium.org The operational state of the network sandbox. This is recorded each time the browser attempts to launch the network service process. This might be recorded multiple times from the same client if the network service process crashes or does not launch correctly. This is not recorded if the network service is running in-process. yichenz@chromium.org chromeos-wmp@google.com Tracks the animation smoothness for the fade-in animation of tab hover card. yichenz@chromium.org chromeos-wmp@google.com Tracks the animation smoothness for the fade-out animation of tab hover card. yichenz@chromium.org chromeos-wmp@google.com Tracks the animation smoothness of tab loading animation. A tracker starts when the first tab loading animation starts and stops after the last one stops for each browser window. The metric is emitted when the tracker stops. temao@chromium.org robliao@chromium.org Records the latency from when the app menu button is pressed to when the menu is shown. It's logged every time the button is pressed. temao@chromium.org robliao@chromium.org Records time from when the menu host initialization is started to when the next frame is successfully presented. It's logged every time the app menu opens. tiborg@chromium.org chrome-desktop-ntp@google.com Records installed color id every time theme service is initialized from prefs. Happens once per profile load if the user has a GM2 color installed. This histogram records only GM2 colors. For tracking the installed GM3 color see the ChromeColors.DynamicColorOnLoad histogram. Or see the ChromeColors.ColorType histogram for the type of installed Chrome color. tiborg@chromium.org chrome-desktop-ntp@google.com Records installed color type every time theme service is initialized from prefs. Happens once per profile load if the user has a Chrome color installed. To track, which color is installed see the ChromeColors.ColorOnLoad histogram for GM2 colors and the ChromeColors.DynamicColorOnLoad histogram for GM3 colors. tiborg@chromium.org chrome-desktop-ntp@google.com Records installed color id every time theme service is initialized from prefs. Happens once per profile load if the user has a GM3 color installed. This histogram records only GM3 colors. For tracking the installed GM2 color see the ChromeColors.ColorOnLoad histogram. Or see the ChromeColors.ColorType histogram for the type of installed Chrome color. pmonette@chromium.org kristianm@chromium.org Records the NTSTATUS result that was returned when attempting to hook NtMapViewOfSection during chrome_elf.dll initialization. Emitted asynchronously shortly after startup. This histogram was expired between M82 and M114. pmonette@chromium.org kristianm@chromium.org Records the number of attempts needed before third-party DLL blocking was properly set up. This is logged immediately after a successful setup. Only recorded on Windows. This histogram was expired between M82 and M114. pmonette@chromium.org kristianm@chromium.org Records the successes and failures when running the third-party DLL blocking setup code, taking into account the safety beacon. Used to determine how often the third-party DLL blocking is disabled because it failed to initialize properly twice in a row. Only recorded on Windows. This histogram was expired between M82 and M114. wfh@chromium.org ssmole@microsoft.com Records the outcome of the heuristic to selectively enable or disable the ProcessExtensionPointDisablePolicy. Used to determine how often the policy will be enabled in practice, as the heuristic detects the presence of third party software. Only recorded on Windows. This histogram was expired between M93 and M114. Retained for historical data. pmonette@chromium.org kristianm@chromium.org Records the different status codes that are emitted by chrome_elf.dll while initializing the NtMapViewOfSection hook used to blocked third-party DLLs. Multiple status codes can be emitted per initialization since some of those status codes represent non-fatal failures. E.g. Failure to clear the previous failure codes. This also means that duplicates are possible. This is recorded shortly after Chrome launches, since chrome_elf.dll doesn't have access to the //base API. This histogram was expired between M82 and M114. lizeb@chromium.org For Custom Tabs generated by Chrome itself instead of external apps, this shows the time between the intent arrival in the CCT and the first navigation start. Recorded when the page has finished loading. lizeb@chromium.org For Custom Tabs generated by Chrome itself instead of external apps, this shows time between the intent arrival in the CCT and the first "page loaded" event, if the navigation is successful.