All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=922562

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=30156444143537c93bcf1e36991ecd858b0b0f61f46362eb26b2eb795a9cece2


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

Win 7 Nvidia GPU Perf
mac-10_13_laptop_high_end-perf

system_health.memory_desktop - Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/13f189f0540000

😿 Pinpoint job stopped with an error.
https://pinpoint-dot-chromeperf.appspot.com/job/13f189f0540000

All of the runs failed. The most common error (20/20 runs) was:
ReadValueError: Could not find values matching: {'story': u'load:search:taobao', 'tir_label': u'load_search', 'histogram': u'memory:chrome:all_processes:reported_by_chrome:malloc:effective_size'}

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/14f54ce8540000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/14f54ce8540000

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/14dd3534540000

Trying a wider bisect range.

📍 Found significant differences after each of 3 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/14dd3534540000

Reland [Optimize TaskQueueSelector] by alexclarke@chromium.org
https://chromium.googlesource.com/chromium/src/+/0c17bc4823f8506061a7f20935f95f0d71d4ad5c
memory:chrome:all_processes:reported_by_chrome:malloc:effective_size: 5.153e+07 → 5.404e+07 (+2.507e+06)

add flag for font-fields by reed@google.com
https://chromium.googlesource.com/chromium/src/+/1240204013ee8b094e42b55bd072bb2b296abd01
memory:chrome:all_processes:reported_by_chrome:malloc:effective_size: 5.404e+07 → 5.387e+07 (-1.647e+05)

Deprecate and remove Media.MediaElement.PlaybackPositionIsInfinity by ossu@chromium.org
https://chromium.googlesource.com/chromium/src/+/287c39316d1a4ab2dc1a4a89e6ccb9916695721a
memory:chrome:all_processes:reported_by_chrome:malloc:effective_size: 5.389e+07 → 5.404e+07 (+1.48e+05)

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

Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

alexclarke: It's pretty clear this is 
Reland [Optimize TaskQueueSelector] by alexclarke@chromium.org
https://chromium.googlesource.com/chromium/src/+/0c17bc4823f8506061a7f20935f95f0d71d4ad5c
memory:chrome:all_processes:reported_by_chrome:malloc:effective_size: 5.153e+07 → 5.404e+07 (+2.507e+06)