All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=776742

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=3051f66e7ccffa0a2eecc982706ca1e6797c31ff388b2425fef8f2969cbac598


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

android-webview-nexus5X
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965206610846956320

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : sunxd
  Commit : 48493dc45de06867eec97e7944f56d511e3c4578
  Date   : Thu Oct 12 20:25:14 2017
  Subject: cc: make solid color picture layer tiling respect device scale factor

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:malloc:effective_size_avg/load_media/load_media_imgur
  Change       : 1.80% | 23944016.5714 -> 24373833.7143

Revision             Result                   N
chromium@508377      23944017 +- 1388171      14      good
chromium@508435      23886113 +- 1229082      14      good
chromium@508439      23805059 +- 1095993      9       good
chromium@508441      23660261 +- 655076       6       good
chromium@508442      24397400 +- 578875       6       bad       <--
chromium@508443      24641249 +- 716574       6       bad
chromium@508450      24668051 +- 771756       6       bad
chromium@508464      24538095 +- 413738       6       bad
chromium@508492      24373834 +- 1307111      14      bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.media.imgur system_health.memory_mobile

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8965206610846956320


For feedback, file a bug with component Speed>Bisection