All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=762293

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=d47e857df79cffc1436980e35f323d4de83138a39b51fb9662ac49768eb88c5c


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

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969252462057148208

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.top_25_smooth
  Metric       : frame_times/LinkedIn
  Change       : 0.59% | 16.4674418605 -> 16.5646990022

Suspected Commit Range
  2 commits in range
  https://chromium.googlesource.com/chromium/src/+log/ac8f154d975080458b32dc0f6642f8f0120ceabd..089e1b2ee0d46a96deed3aa1597c35201598493c


Revision             Result                    N
chromium@498815      16.4674 +- 0.0840315      6        good
chromium@498982      16.4709 +- 0.0696538      6        good
chromium@499066      16.4785 +- 0.0840127      6        good
chromium@499087      16.4527 +- 0.0905382      6        good
chromium@499098      16.4779 +- 0.0546727      6        good
chromium@499103      16.5426 +- 0.308613       14       good
chromium@499104      16.5473 +- 0.49547        21       good
chromium@499105      ---                       ---      build failure
chromium@499106      16.641 +- 0.402703        14       bad
chromium@499108      16.6617 +- 0.22891        6        bad
chromium@499149      16.5647 +- 0.228083       6        bad

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=LinkedIn smoothness.gpu_rasterization.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969252462057148208


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8969179340018849968

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

Suspected Commit
  Author : Tobias Sargeant
  Commit : 416174f07b4d1d930fee687ddd0eae67fbc24ee1
  Date   : Fri Sep 01 01:18:09 2017
  Subject: Disable ScrollTopLeftInterop in WebView.

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.top_25_smooth
  Metric       : frame_times/LinkedIn
  Change       : 0.44% | 16.4649836656 -> 16.5380942768

Revision             Result                    N
chromium@498178      16.465 +- 0.149294        14      good
chromium@498781      16.4723 +- 0.0738976      9       good
chromium@499083      16.4698 +- 0.126009       14      good
chromium@499093      16.4516 +- 0.104829       9       good
chromium@499098      16.4611 +- 0.0805683      9       good
chromium@499100      16.4459 +- 0.0958403      9       good
chromium@499101      16.6535 +- 0.288312       6       bad       <--
chromium@499103      16.5965 +- 0.403182       14      bad
chromium@499122      16.6073 +- 0.370374       9       bad
chromium@499159      16.6224 +- 0.250877       6       bad
chromium@499234      16.6118 +- 0.338373       9       bad
chromium@499384      16.5381 +- 0.207691       9       bad

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=LinkedIn smoothness.gpu_rasterization.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969179340018849968


For feedback, file a bug with component Speed>Bisection