All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=797419

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=a122e862590c8f67af04e69c985849e6f0083f6f8413f6d321d7acc011baaae7


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

android-nexus5
linux-release

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8959470658334579952

=== Auto-CCing suspected CL author rsesek@chromium.org ===

Hi rsesek@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : Robert Sesek
  Commit : f88863f430c77b1261531cbc6c4320481d4caf3d
  Date   : Tue Dec 19 22:04:45 2017
  Subject: crash_keys: Convert "url-chunk" to the new API.

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : thread_times.tough_compositor_cases
  Metric       : tasks_per_frame_GPU/tasks_per_frame_GPU
  Change       : 2.53% | 6.49195056797 -> 6.65647945427

Revision             Result                    N
chromium@525137      6.49195 +- 0.0430267      6      good
chromium@525151      6.46432 +- 0.0328588      6      good
chromium@525152      6.47509 +- 0.0333222      6      good
chromium@525153      6.66103 +- 0.0270207      6      bad       <--
chromium@525155      6.65125 +- 0.0594655      6      bad
chromium@525158      6.65163 +- 0.0460125      6      bad
chromium@525164      6.62556 +- 0.0484089      6      bad
chromium@525190      6.6186 +- 0.0563339       6      bad
chromium@525242      6.65648 +- 0.0263894      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 thread_times.tough_compositor_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8959470658334579952


For feedback, file a bug with component Speed>Bisection

Regression went away in 526329 - 526361.