Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8997626298456678368

===== BISECT JOB RESULTS =====
Status: completed


===== SUSPECTED CL(s) =====
Subject : Don't apply clips to children of composited-scrolling elements for overlap testing.
Author  : chrishtr
Commit description:
  
However, only compare these unclipped rects with other unclipped rects. This
prevents excessive layer explosion outside of the composited-scrolling layer.

This requires storing unclipped absolute rects for every PaintLayer.

BUG= 652448 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://chromiumcodereview.appspot.com/2425873005
Cr-Commit-Position: refs/heads/master@{#426664}
Commit  : 0a78cbe13de10c5a1c951d753fd13d01c8b3488e
Date    : Fri Oct 21 00:56:33 2016


===== TESTED REVISIONS =====
Revision         Exit Code  Std Dev  N  Good?
chromium@426656  0          N/A      3  good
chromium@426661  0          N/A      3  good
chromium@426663  0          N/A      3  good
chromium@426664  1          N/A      3  bad    <--
chromium@426665  1          N/A      3  bad
chromium@426674  1          N/A      3  bad
chromium@426692  1          N/A      3  bad
chromium@426728  1          N/A      3  bad

Bisect job ran on: win_perf_bisect
Bug ID: 660102

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests smoothness.tough_animation_cases
Test Metric: frame_time_discrepancy/frame_time_discrepancy
Relative Change: Zero to non-zero
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/win_perf_bisect/builds/7026
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8997626298456678368


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6169499458338816

| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Tests>AutoBisect.  Thank you!

Chris, looks like this CL actually broke a performance test, can you take a look?