All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=896610

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ee02a1c7fc99299a2033da0b522c8be5b77d96a7c68585bdc8f7f98e3e921ce8


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

mac-10_12_laptop_low_end-perf
mac-10_13_laptop_high_end-perf

v8.browsing_desktop - Benchmark documentation link:
  None

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/12b7e5aee40000

📍 Found significant differences after each of 2 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/12b7e5aee40000

[GTK] Reset theme colors when dark mode preference changes by thomasanderson@chromium.org
https://chromium.googlesource.com/chromium/src/+/eeb3c127b8b0e82c4e0765f81c4b11c5a95522b0
total:500ms_window:renderer_eqt: 28.49 → 20.9 (-7.597)

Reland gpu: Add UMA metric for measuring total raster task duration. by khushalsagar@chromium.org
https://chromium.googlesource.com/chromium/src/+/cd8fbb77cfa164eef66378204a588443af9bb875
total:500ms_window:renderer_eqt: 23.58 → 113.3 (+89.72)

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

Benchmark documentation link:
  None

Graphs recovered. Hard to believe those highlighted changes are responsible?