All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=912009

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=450a30c049b67bf1e09a6b38da5e7d74864de4031f4509bcc136013a0cb9c3db


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

linux-perf

system_health.memory_desktop - Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/100efa23e40000

📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/100efa23e40000

Revert "Fix layout/repaint of tab on focus or alert change." by pbos@chromium.org
https://chromium.googlesource.com/chromium/src/+/0bfabec2ac11decb989a7a03ea5980eaf56893e6
memory:chrome:all_processes:reported_by_chrome:gpu:effective_size: 9.141e+06 → 1.229e+07 (+3.152e+06)

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

Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

Revert of previous bug that caused favicons not to render, that bug caused corresponding improvements in this metric.