This pinpoint job 
https://pinpoint-dot-chromeperf.appspot.com/job/178e80d3640000

triggered this bug comment
https://bugs.chromium.org/p/chromium/issues/detail?id=884942#c3

----

📍 Found significant differences after each of 2 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/178e80d3640000

Remove code to hide backdrop for opened launcher by weidongg@chromium.org
https://chromium.googlesource.com/chromium/src/+/d34608f4aeb71b839b29c54020f3236b944158da
1.691e+07 → 1.351e+07 (-3.405e+06)

Improve GL texture memory reporting. by kylechar@chromium.org
https://chromium.googlesource.com/chromium/src/+/d167a866a8f6c4d270830501a6fbd623128a32ad
1.423e+07 → 5.69e+07 (+4.267e+07)

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

Benchmark documentation link:
  None

---


The first of those changes (Remove code to hide backdrop ...) is actually an improvement when I look at the graph. Is it intentional that improvements get mentioned this way when bisecting a regression?