ssid@chromium.org chrome-tab-group-eng@google.com Records the number of opened tabs in last 10 minutes, that are being considered as part of the group suggestion. Logged every time the group suggestion computation is run. ssid@chromium.org chrome-tab-group-eng@google.com Records the number of group suggestions that are available to show. Logged every time the group suggestion computation is run. ssid@chromium.org chrome-tab-group-eng@google.com Records the number of group suggestions that are available to show after throttling. Logged every time the group suggestion is available to show. ckitagawa@chromium.org ssid@chromium.org chrome-tab-group-eng@google.com Records the reason why the group suggestion is throttled. Logged every time the group suggestion was computed and then throttled. mfiaz@google.com ssid@chromium.org salg@google.com Records events related to the group suggestion service UI. Logged each time the respective event occurs. mfiaz@google.com ssid@chromium.org salg@google.com Records the average number of times per group a tab from a tab group was switched to the foreground. This is recorded when the application is stopped. The count is reset when the application is stopped. The source of the suggestion is {GroupCreationSource}. mfiaz@google.com ssid@chromium.org salg@google.com Records the number of times a tab from a tab group was switched to the foreground. This is recorded when the application is stopped. The count is reset when the application is stopped. The source of the suggestion is {GroupCreationSource}. mfiaz@google.com ssid@chromium.org salg@google.com Records the average time spent per group on a tab from a tab group per session. This is recorded when the application is stopped. The count is reset when the application is stopped. The source of the suggestion is {GroupCreationSource}. mfiaz@google.com ssid@chromium.org salg@google.com Records the total time spent on a tab from a tab group per session. This is recorded when the application is stopped. The count is reset when the application is stopped. The source of the suggestion is {GroupCreationSource}. ckitagawa@chromium.org ssid@chromium.org chrome-tab-group-eng@google.com Records whether the top suggestion contains the tab that is in the last position in the tab model. Logged every time the group suggestion is available to show. ssid@chromium.org chrome-tab-group-eng@google.com Records the reason for the top group suggestion. Logged every time the group suggestion is available to show. ssid@chromium.org chrome-tab-group-eng@google.com Records the number of tabs in the top group suggestion. Logged every time the group suggestion is available to show. ssid@chromium.org chrome-tab-group-eng@google.com Records the number of tabs in the top group suggestion. Logged every time the group suggestion is available to show. ckitagawa@chromium.org ssid@chromium.org chrome-tab-group-eng@google.com Records the average index difference between any tab with its adjacent tabs in the top suggestion. This is recorded once per top suggestion, and recorded every time when suggestion is available to show after throttling. ckitagawa@chromium.org ssid@chromium.org chrome-tab-group-eng@google.com Records the max index difference between any tab with its adjacent tabs in the top suggestion. This is recorded once per top suggestion, and recorded every time when suggestion is available to show after throttling. romanarora@chromium.org chrome-desktop-ntp@google.com Records the percentage of history annotated visits that have a visit duration greater than zero milliseconds and that will be leveratged to produce history aggregate data. Logged every time the History URL visit data fetcher executes and the associated features and params are enabled. romanarora@chromium.org chrome-desktop-ntp@google.com Records the success or failure of a given data fetcher's execution. Logged every time the Visited URL Ranking Service's Fetch API is invoked and data fetchers executed. romanarora@chromium.org chrome-desktop-ntp@google.com Logs the number of URL visit aggregates that have been scored and will be returned to the caller. Logged as part of the Visited URL Ranking Service's Rank API call. Only logged when the visited url ranking service feature is enabled. romanarora@chromium.org chrome-desktop-ntp@google.com Records the status of a particular execution step of the Visited URL ranking service's APIs. Logged every time a client invokes one of the service's APIs. `Fetch` is recorded once per fetcher source participating in incoming Fetch API calls. `Rank` is recorded once per incoming Rank API call. `Transform` is recorded once per transformer participating in an incoming Fetch API call. Only logged when the visited url ranking service feature is enabled. romanarora@chromium.org chrome-desktop-ntp@google.com Records the most relevant action that took place for a scored URL visit resumption suggestion displayed on a UI, such as whether the user has seen, activated, or dismissed the suggestion. Logged by various Tab Resumption UI features when the user is presented with and/or interacts with a URL visit resumption suggestion. Only logged when the visited url ranking service feature is enabled. romanarora@chromium.org chrome-desktop-ntp@google.com Records the percentage of outbound URL visit aggregates returned by a transform versus the inbound URL visit aggregates provided to the transform. Logged every time a URL visit aggregates transformer succeeded. Only logged if the visited url ranking service feature is enabled. romanarora@chromium.org chrome-desktop-ntp@google.com Records the time elapsed in milliseconds (i.e. latency) when executing a given transformation. Logged every time a transformer succeeded and there were URL visit aggregates passed as input to the transform. Only logged if the visited url ranking service feature is enabled. Only logged when the tranform had data to process and when the transform was successful. romanarora@chromium.org chrome-desktop-ntp@google.com Records the success or failure of a transform type that was executed as part of the Visited URL Ranking Service's Fetch API call. Logged once for each transformer that excuted in the Fetch API call. Only logged if the visited url ranking service feature is enabled.