All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=900335

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=6ef5dbfa159c6a7d6df71f0db3823d6b4c7cb40448a0db0038d8f73ad994b47c


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

Win 7 Nvidia GPU Perf

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

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/143dc9cee40000

📍 Found significant differences after each of 3 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/143dc9cee40000

Fix content of old size shown on tab switch by samans@chromium.org
https://chromium.googlesource.com/chromium/src/+/fccd79a558e23ab2b6cd5a7d5f618e682efd8e77
frame_times: 41.74 → 766.6 (+724.9)

Elevation Service setup and COM registration. by ganesh@chromium.org
https://chromium.googlesource.com/chromium/src/+/f4c67a8992d2ced65731b383ac475b66a5f09a10
frame_times: 813.6 → No values

Revert "Elevation Service setup and COM registration." by nhiroki@chromium.org
https://chromium.googlesource.com/chromium/src/+/05d5697a53bafa88249c7d7239468049198aaa8c
frame_times: No values → 868.9

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

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

My change was just to revert the previous change.

samans@: Could you triage this? According to the c#3, seemingly your CL increased the frame_times.

My change has nothing to do with frame times or Chrome UI.