The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0bed265f220fcf4db86ad1356bed9ec274748b54

commit 0bed265f220fcf4db86ad1356bed9ec274748b54
Author: altimin <altimin@chromium.org>
Date: Tue May 16 21:08:30 2017

[scheduler] Add RendererScheduler.TaskDurationPerQueueType.

Complement RendererScheduler.NumberOfTasksPerQueueType metric by
reporting total duration of tasks split per queue type.

R=skyostil@chromium.org,isherman@chromium.org
CC=haraken@chromium.org
BUG= 702314 

Review-Url: https://codereview.chromium.org/2755953003
Cr-Commit-Position: refs/heads/master@{#472216}

[modify] https://crrev.com/0bed265f220fcf4db86ad1356bed9ec274748b54/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
[modify] https://crrev.com/0bed265f220fcf4db86ad1356bed9ec274748b54/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
[modify] https://crrev.com/0bed265f220fcf4db86ad1356bed9ec274748b54/tools/metrics/histograms/histograms.xml

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d6ce53c7b0a9683d85f6f4276795490f4e8ddc24

commit d6ce53c7b0a9683d85f6f4276795490f4e8ddc24
Author: Alexander Timin <altimin@chromium.org>
Date: Tue Jun 13 21:09:13 2017

[scheduler] Task duration metrics for first minute in background.

Report task duration per queue type metrics for the first minute in the
background and for the rest (so called long tail) separately.

BUG= 702314 
R=skyostil@chromium.org,alexclarke@chromium.org,rkaplow@chromium.org

Change-Id: I4782e157ef4c71ac70573649c3d9b3b1fe03afcb
Reviewed-on: https://chromium-review.googlesource.com/530807
Commit-Queue: Alexander Timin <altimin@chromium.org>
Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#479149}
[modify] https://crrev.com/d6ce53c7b0a9683d85f6f4276795490f4e8ddc24/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
[modify] https://crrev.com/d6ce53c7b0a9683d85f6f4276795490f4e8ddc24/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
[modify] https://crrev.com/d6ce53c7b0a9683d85f6f4276795490f4e8ddc24/tools/metrics/histograms/histograms.xml