All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=787999

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2f0fec7afb4d9e043a919a7dbf3184b69f7fe415671f2a7850a6e671a462a0b9


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962183997926979392

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8962183989437109744

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

Suspected Commit
  Author : Alexandr Ilin
  Commit : 698e803c4335c3e9429f580851a580b18e7daef0
  Date   : Thu Nov 16 21:07:36 2017
  Subject: Revert "Enable SpeculativePreconnect Field Trial Testing"

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : media.mobile
  Metric       : story:power_avg/video.html?src_tulip2.vp9.webm_Regular-3G
  Change       : 2.94% | 1.46331760238 -> 1.52610341547

Revision             Result                    N
chromium@517139      1.46332 +- 0.0583752      9       good
chromium@517182      1.4615 +- 0.0580976       9       good
chromium@517188      1.47354 +- 0.0835632      14      good
chromium@517190      1.4633 +- 0.0314683       6       good
chromium@517191      1.55788 +- 0.227057       9       bad       <--
chromium@517193      1.49669 +- 0.0294051      9       bad
chromium@517204      1.49577 +- 0.0897081      14      bad
chromium@517225      1.5261 +- 0.177545        9       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=video.html.src.tulip2.vp9.webm.Regular.3G media.mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8962183989437109744


For feedback, file a bug with component Speed>Bisection

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

Suspected Commit
  Author : Alexandr Ilin
  Commit : 698e803c4335c3e9429f580851a580b18e7daef0
  Date   : Thu Nov 16 21:07:36 2017
  Subject: Revert "Enable SpeculativePreconnect Field Trial Testing"

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : media.mobile
  Metric       : story:power_avg/video.html?src_tulip2.vp9.webm_Regular-3G
  Change       : 2.60% | 1.52189716925 -> 1.56150976963

Revision             Result                    N
chromium@517139      1.5219 +- 0.0801044       14      good
chromium@517182      1.51682 +- 0.0608408      9       good
chromium@517188      1.51831 +- 0.0702795      9       good
chromium@517190      1.52684 +- 0.0689937      14      good
chromium@517191      1.59163 +- 0.193461       9       bad       <--
chromium@517193      1.58082 +- 0.143939       6       bad
chromium@517204      1.57507 +- 0.247272       14      bad
chromium@517225      1.56151 +- 0.188961       14      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=video.html.src.tulip2.vp9.webm.Regular.3G media.mobile

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8962183997926979392


For feedback, file a bug with component Speed>Bisection