All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=792455

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=26127b3e25b4619f9fd4705f187e43a3e149759cef1b260349741dea5414f393


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

android-nexus6
android-webview-nexus5X
android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8960949339310883376

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

Suspected Commit
  Author : Chris Harrelson
  Commit : a3e4477c29d087d3708dbcb4dc5a90985c2b45e3
  Date   : Tue Dec 05 01:51:58 2017
  Subject: [PE] Turn on half-width tiles for all platforms and devices.

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : smoothness.gpu_rasterization.tough_filters_cases
  Metric       : frame_times/Filter Terrain SVG
  Change       : 38.22% | 29.2577299039 -> 40.4406151986

Revision             Result                  N
chromium@521468      29.2577 +- 7.52891      6      good
chromium@521533      29.1106 +- 5.65693      6      good
chromium@521565      29.4257 +- 7.3203       6      good
chromium@521581      28.7243 +- 6.07416      6      good
chromium@521585      29.1635 +- 4.77341      6      good
chromium@521586      36.517 +- 1.99349       6      bad       <--
chromium@521587      38.4579 +- 6.70513      6      bad
chromium@521589      39.523 +- 9.48428       6      bad
chromium@521597      40.4406 +- 10.093       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=Filter.Terrain.SVG smoothness.gpu_rasterization.tough_filters_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8960949339310883376


For feedback, file a bug with component Speed>Bisection