All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=883781

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=569ee3c240e6904a4c8bd37ff4ef798cfc6c069bee55c11f1a8d765287652a38


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

Android Nexus5X WebView Perf

rendering.mobile - Benchmark documentation link:
  https://bit.ly/rendering-benchmarks

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/1439be3d640000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/1439be3d640000

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/176ca63d640000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/176ca63d640000

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/17d485e3640000

📍 Found significant differences after each of 4 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/17d485e3640000

[Background Fetch] Update Background Fetch unit tests. by nator@chromium.org
https://chromium.googlesource.com/chromium/src/+/ce4238cadf8beec3f37b508d690c84ece793f720
0.337 → No values

Revert "Support rounded rects that don't have the same radius on all 4 corners" by manucornet@chromium.org
https://chromium.googlesource.com/chromium/src/+/aba45baa776104cea65e0c6f2c27c8ef53318e92
No values → 0.3338

Surface Synchronization: Enable by default on Android by ericrk@chromium.org
https://chromium.googlesource.com/chromium/src/+/5479bee2ba20c0527e19137d8056b539d30125d1
0.3181 → No values

Disable Surface Synchronization on Webview by nednguyen@google.com
https://chromium.googlesource.com/chromium/src/+/a91df97e284e497ecf1222b4ada5af66306718a5
No values → 0.4025

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

Benchmark documentation link:
  https://bit.ly/rendering-benchmarks