All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=806810

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=6db936f02ad3237220f2026a593c55d9bb9f12174cdd4e7059a7ef1eb844ef2a


Bot(s) for this bug's original alert(s):

android-nexus5X
android-one
android-webview-nexus6

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/14e3b14a840000

📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/14e3b14a840000

Add UKM metrics for rendering timing measurements
By cbiesinger@chromium.org · Fri Jan 26 20:16:52 2018
chromium @ a324bac1171a6d35eb9fe367529300aabc3ae1f2

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/772b2bcdbaa8ea5c5b1f47255c6c1562016fb680

commit 772b2bcdbaa8ea5c5b1f47255c6c1562016fb680
Author: Christian Biesinger <cbiesinger@chromium.org>
Date: Tue Jan 30 06:03:38 2018

Revert "Add UKM metrics for rendering timing measurements"

This reverts commit a324bac1171a6d35eb9fe367529300aabc3ae1f2.

Reason for revert: Causes various performance regressions and at least one memory regression, see bugs listed below.

Original change's description:
> Add UKM metrics for rendering timing measurements
>
> UKM review: https://docs.google.com/document/d/1Cpe5kLi3tVshH3evoJVUVDjOw7le-f8jFwBjEk2uadY/edit
>
> Bug: 783383
> Change-Id: Ib684e9e07322e27633b33576c688fa699fada81e
> Reviewed-on: https://chromium-review.googlesource.com/812154
> Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
> Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
> Commit-Queue: Christian Biesinger <cbiesinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#532051}

TBR=cbiesinger@chromium.org,asvitkine@chromium.org,chrishtr@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 783383, 807121 , 806814 , 806810 , 806808 , 806806 , 806795 , 806801 , 806809 , 806812 , 806830 , 806829 , 806805 , 806796 
Change-Id: I33e40eb337bb0b1daea4be753878d7218342942f
Reviewed-on: https://chromium-review.googlesource.com/892482
Commit-Queue: Christian Biesinger <cbiesinger@chromium.org>
Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532789}
[modify] https://crrev.com/772b2bcdbaa8ea5c5b1f47255c6c1562016fb680/services/metrics/public/cpp/ukm_recorder.h
[modify] https://crrev.com/772b2bcdbaa8ea5c5b1f47255c6c1562016fb680/third_party/WebKit/Source/core/frame/LocalFrameView.cpp
[modify] https://crrev.com/772b2bcdbaa8ea5c5b1f47255c6c1562016fb680/third_party/WebKit/Source/core/frame/LocalFrameView.h
[modify] https://crrev.com/772b2bcdbaa8ea5c5b1f47255c6c1562016fb680/tools/metrics/ukm/ukm.xml