All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=787438

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=8983593fb2ab529b0895c144b4bf4af13f0cab20eebaf5151c6d7948963fd346


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

android-webview-nexus5X
android-webview-nexus6
chromium-rel-mac11-air

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962312004521956896

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

Suspected Commit
  Author : Kouhei Ueno
  Commit : e1cfaee91ad08478fbd956fcd73d570032702397
  Date   : Thu Nov 09 08:23:01 2017
  Subject: Revert "Make script cache hits async"

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : v8.browsing_mobile
  Metric       : v8-gc-incremental-step_sum/browse_tech/browse_tech_discourse_infinite_scroll
  Change       : 78.51% | 23.086 -> 41.2118333333

Revision             Result                   N
chromium@515117      23.086 +- 6.77042        6      good
chromium@515120      24.0647 +- 4.23789       6      good
chromium@515121      42.9027 +- 3.17545       6      bad       <--
chromium@515122      43.1815 +- 0.561745      6      bad
chromium@515123      42.2612 +- 4.10683       6      bad
chromium@515129      41.2118 +- 4.50985       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=browse.tech.discourse.infinite.scroll v8.browsing_mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8962312004521956896


For feedback, file a bug with component Speed>Bisection