All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=871396

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c8bfb33d1ee3596a307ac97c9376d8eb3fec00b4f3ddc137269f9a7bb2539b01


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

Android Nexus5X WebView Perf

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/12ca98c8640000

📍 Found significant differences after each of 3 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/12ca98c8640000

Enable use-zoom-for-dsf on Android on M70 by eirage@chromium.org
https://chromium.googlesource.com/chromium/src/+/d0b8bbd2dbf9c06dcbbd01a4b1285cf7a1bc2ba0
4.675e+07 → 4.76e+07 (+8.456e+05)

Roll skia/third_party/skcms 2925dc93401c..f80f027f8ac9 (1 commits) by skcms-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com
https://skia.googlesource.com/skia/+/990ec990a66aab06bfa18aa16a5e3960a4b34118
4.738e+07 → No values

Roll src/third_party/skia b303a427c03d..e782f8472f61 (2 commits) by skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com
https://chromium.googlesource.com/chromium/src/+/f7521c9ca78d813019917c2a4df1914353dae6ff
No values → 4.838e+07

Assigning to sheriff scroggo@chromium.org because "Roll src/third_party/skia b303a427c03d..e782f8472f61 (2 commits)" is a roll.

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

The skcms changes (https://skia-review.googlesource.com/c/skcms/+/144482) just add a test build. This leaves bsalomon@'s https://skia-review.googlesource.com/c/skia/+/142814 as the only potential culprit from Skia.

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/12d59331640000

Looking at the pinpoint link it appears that https://chromium.googlesource.com/chromium/src/+/d0b8bbd2dbf9c06dcbbd01a4b1285cf7a1bc2ba0 is a more likely candidate. I doubt that my change would increase memory usage. Even if it somehow did we'd see it across the board (many tests on many OSes).

I kicked off another pinpoint on one test to try to confirm this (comment #6).

📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/12d59331640000

Enable use-zoom-for-dsf on Android on M70 by eirage@chromium.org
https://chromium.googlesource.com/chromium/src/+/d0b8bbd2dbf9c06dcbbd01a4b1285cf7a1bc2ba0
4.677e+07 → 4.84e+07 (+1.63e+06)

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