All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=770730

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=88041f106b3475fea6abd630698c27429c970de610b68b9bf44fd6b49bc98360


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win7-x64-dual
chromium-rel-win8-dual
linux-release
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8966830302700027152

=== 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: winx64ati_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstContentfulPaint_avg/warm/FlipKart
  Change       : 5323.78% | 21.4061666727 -> 1161.02266667

Suspected Commit Range
  8 commits in range
  https://chromium.googlesource.com/chromium/src/+log/2e8a148e6c387088004f188c1e5f66169d51a340..b64a18def16cc3dd0a034e39adedcdd092e718f4


Revision             Result                  N
chromium@504642      21.4062 +- 4.60928      6        good
chromium@504664      20.7758 +- 4.03137      6        good
chromium@504669      21.486 +- 5.87674       6        good
chromium@504670      ---                     ---      build failure
chromium@504671      ---                     ---      build failure
chromium@504672      ---                     ---      build failure
chromium@504673      ---                     ---      build failure
chromium@504674      ---                     ---      build failure
chromium@504675      ---                     ---      build failure
chromium@504676      ---                     ---      build failure
chromium@504677      1206.88 +- 220.708      6        bad
chromium@504686      1156.82 +- 188.39       6        bad
chromium@504729      1161.02 +- 203.337      6        bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=FlipKart loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8966830302700027152


For feedback, file a bug with component Speed>Bisection