All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=921171

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=79db88d23c3e2441c4553ac53cc4f96b6c3242ccd5012a922634b1b0e922677c


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

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/1490a14f940000

📍 Found significant differences after each of 3 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/1490a14f940000

WebUI: removing paper-slider by aee@chromium.org
https://chromium.googlesource.com/chromium/src/+/82d643e5cda14541b31380222c58c7f61efd1705
many-block-children-fixed-inline-size: 1648 → 1624 (-23.64)

Move visual overflow computation into the descendant-dependent tree walk. by chrishtr@chromium.org
https://chromium.googlesource.com/chromium/src/+/395a93a5ea18f0890a237d5e687a80b69f39a473
many-block-children-fixed-inline-size: 1624 → 1491 (-133)

Introduce ConsoleLogger by yhirano@chromium.org
https://chromium.googlesource.com/chromium/src/+/8d0a752703b8c49110b747cf733e0c6e42ec719d
many-block-children-fixed-inline-size: 1488 → 1461 (-26.59)

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

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

Assigning to the author of the CL having the biggest impact.