All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=871939

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=9c52590fa62fa54e2a54119882e691bb27d9e052f05a1790913736786a3da973


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

android-nexus5x-perf

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/15f96cc8640000

📍 Found significant differences after each of 3 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/15f96cc8640000

Increase max number of MV sites to 9 if custom links is enabled and show up to 10 custom links by kristipark@chromium.org
https://chromium.googlesource.com/chromium/src/+/c1680096337fe0e7a703adfd5694df8a04926fef
76.54 → 76.07 (-0.4722)

Enable use-zoom-for-dsf on Android on M70 by eirage@chromium.org
https://chromium.googlesource.com/chromium/src/+/d0b8bbd2dbf9c06dcbbd01a4b1285cf7a1bc2ba0
76.07 → 83.03 (+6.961)

Avoid touching TrackedPreferencesMigrator's ref count before it's fully constructed by tzik@chromium.org
https://chromium.googlesource.com/chromium/src/+/b9efb2216a07f625f86eaff914003d0f696ec694
82.8 → 83.39 (+0.5879)

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

investigating...