All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=920270

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=f7ff8be5698b997f307447e5765d39e624514daa3c0e26b33e8d29e4c7f539b0


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

Win 7 Perf
mac-10_12_laptop_low_end-perf

blink_perf.layout - Benchmark documentation link:
  https://bit.ly/blink-perf-benchmarks

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/11e1dde5940000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/11e1dde5940000

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/15fde2b9940000

Kicked another bisect on flexbox-row-nowrap story with a wider range.

📍 Found significant differences after each of 10 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/15fde2b9940000

Revert "Reland "Reland: [Accessibility] Volume slider reads out level in percentages."" by findit-for-me@appspot.gserviceaccount.com
https://chromium.googlesource.com/chromium/src/+/70a1fffbdceeb2a4ad0a5e22c255f4ca12a6597b
flexbox-row-nowrap: 5618 → 5503 (-114.4)

Move visual overflow computation into the descendant-dependent tree walk. by chrishtr@chromium.org
https://chromium.googlesource.com/chromium/src/+/395a93a5ea18f0890a237d5e687a80b69f39a473
flexbox-row-nowrap: 5467 → 5345 (-122)

IndexedDB: Update factory to use origin supplied by browser process by cmp@chromium.org
https://chromium.googlesource.com/chromium/src/+/2203497e4ea18d1f90d33ceae54da1f65183e024
flexbox-row-nowrap: 5345 → 5303 (-41.59)

[OnionSoup] Use FetchAPIRequest.body instead of FetchAPIRequest.blob in SW code by leon.han@intel.com
https://chromium.googlesource.com/chromium/src/+/28e779303ba5c598a75dc00352b26d1b82056d14
flexbox-row-nowrap: 5332 → 5364 (+31.51)

media/gpu: Add data members in ImageProcessor. by deanliao@chromium.org
https://chromium.googlesource.com/chromium/src/+/20792b916e8662bdd5a5fce9e015731e5f571b92
flexbox-row-nowrap: 5348 → 5377 (+28.45)

Automatic password generation in new architecture. by dvadym@chromium.org
https://chromium.googlesource.com/chromium/src/+/2287ff1e1dd6ec043a6e7f2550495d086faa6706
flexbox-row-nowrap: 5400 → 5341 (-59.22)

v8binding: Implement timers with IDL callback function of type Function by yukishiino@chromium.org
https://chromium.googlesource.com/chromium/src/+/f95130edf1c94febbf0eac48f1808ad12edf75de
flexbox-row-nowrap: 5321 → 5248 (-73.77)

[App Management] Add chrome permission view by ceciliani@google.com
https://chromium.googlesource.com/chromium/src/+/3f09a3f4eefbd31e4938f5ef679607ba1ff79490
flexbox-row-nowrap: 5250 → 5307 (+57.49)

Move dirty bits for visual overflow recalc into PaintLayer by chrishtr@chromium.org
https://chromium.googlesource.com/chromium/src/+/d8ebabeb38aae2a0f18e2f8e843ed069080037b5
flexbox-row-nowrap: 5301 → 5016 (-284.7)

Roll src/third_party/angle af4cef51eaa7..8c78ce4bd30c (2 commits) by chromium-autoroll@skia-public.iam.gserviceaccount.com
https://chromium.googlesource.com/chromium/src/+/fcc99fc53d3b64db40a70d95fb2e7077b5e3f750
flexbox-row-nowrap: 5029 → 4953 (-75.86)

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

Benchmark documentation link:
  https://bit.ly/blink-perf-benchmarks