| Index: tools/metrics/histograms/histograms.xml | 
| diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml | 
| index b95db61f52d307d2aae0eaa047b9824c7fb0f3ab..11f000d99ae323f9f73621203643507c85b9a8db 100644 | 
| --- a/tools/metrics/histograms/histograms.xml | 
| +++ b/tools/metrics/histograms/histograms.xml | 
| @@ -64341,6 +64341,16 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries. | 
| </summary> | 
| </histogram> | 
|  | 
| +<histogram name="TaskScheduler.NumTasksBeforeDetach" units="tasks"> | 
| +  <owner>fdoray@chromium.org</owner> | 
| +  <owner>gab@chromium.org</owner> | 
| +  <owner>robliao@chromium.org</owner> | 
| +  <summary> | 
| +    Number of tasks executed by a SchedulerWorker before it detached. Recorded | 
| +    when the SchedulerWorker is woken up after detaching. | 
| +  </summary> | 
| +</histogram> | 
| + | 
| <histogram name="TaskScheduler.NumTasksBetweenWaits" units="tasks"> | 
| <owner>fdoray@chromium.org</owner> | 
| <owner>gab@chromium.org</owner> | 
| @@ -110126,6 +110136,7 @@ value. | 
| label="Applies to the ForegroundFileIO worker pool."/> | 
| <suffix name="ForegroundPool" label="Applies to the Foreground worker pool."/> | 
| <affected-histogram name="TaskScheduler.DetachDuration"/> | 
| +  <affected-histogram name="TaskScheduler.NumTasksBeforeDetach"/> | 
| <affected-histogram name="TaskScheduler.NumTasksBetweenWaits"/> | 
| <affected-histogram name="TaskScheduler.TaskLatency"/> | 
| </histogram_suffixes> | 
|  |