All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=774554

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=1a5b013784aba0bb51a462ad97fbe8903669104223542397c921dae4e34d6e91


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8965831139817128016

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

Suspected Commit
  Author : Stephen Chenney
  Commit : 8ff2371257ac4f24d77da4a62569840a53c49b47
  Date   : Thu Oct 12 13:11:52 2017
  Subject: Prevent squashing of border-radius layers

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:cc:effective_size_avg/background_search/background_search_google
  Change       : 15.48% | 25612288.0 -> 29577216.0

Revision             Result                   N
chromium@508131      25612288 +- 0.0          6      good
chromium@508236      25612288 +- 0.0          6      good
chromium@508288      23941803 +- 9149625      6      good
chromium@508314      25612288 +- 0.0          6      good
chromium@508327      25612288 +- 0.0          6      good
chromium@508328      25612288 +- 0.0          6      good
chromium@508329      29577216 +- 0.0          6      bad       <--
chromium@508331      29577216 +- 0.0          6      bad
chromium@508334      29577216 +- 0.0          6      bad
chromium@508340      29577216 +- 0.0          6      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=background.search.google 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/8965831139817128016


For feedback, file a bug with component Speed>Bisection