All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=597630

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg0IDurAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg0OqQtgoM


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

android-nexus5X

-RVG (it was marked as restricted because nexus5X wasn't added to the bot whitelist yet).

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


=== Bisection aborted ===
The bisect was aborted because The metric values for the initial "good" and "bad" revisions do not represent a clear regression.
Please contact the the team (see below) if you believe this is in error.

=== Warnings ===
The following warnings were raised by the bisect job:

 * Bisect failed to reproduce the regression with enough confidence.

===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@382608         143.307633  4.260196    12          good
chromium@382724         147.244837  5.288603    18          bad

Bisect job ran on: android_webview_aosp_perf_bisect
Bug ID: 597630

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --also-run-disabled-tests smoothness.key_silk_cases
Test Metric: frame_time_discrepancy/frame_time_discrepancy
Relative Change: 3.52%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_webview_aosp_perf_bisect/builds/83
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9016740943778584400


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=597630

| 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!

Kicked off another bisect with a wider range after removing 2 recovered tests from the bug.

Trying again with a wider range.

Seems we don't have any data beyond Mar16~29 window. Is the bot down? May be that's why the last bisect job stalled?

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


===== SUSPECTED CL(s) =====
Subject : Handling transition animation between non-interpolable values.
Author  : abhishek.ka
Commit description:
  
In current transition animations, for any lengthsize css property
irrespective of interpolable values animation does start.
This patch will check whether the values are interpolable and decides
as follows:
i) If values are interpoable, start animation,
ii) else, hard set the respective length property to the element .
BUG= 513127 

Review URL: https://codereview.chromium.org/1732323003

Cr-Commit-Position: refs/heads/master@{#382801}
Commit  : 4d344058522e01d85162fcd1a9e5f4b747db9383
Date    : Wed Mar 23 06:48:44 2016


===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@382608         146.382476  6.638955    5           good
chromium@382720         150.737907  3.363064    5           good
chromium@382776         150.52893   3.988487    5           good
chromium@382790         154.520176  8.73615     5           good
chromium@382797         149.04027   3.232169    5           good
chromium@382799         150.686074  4.490894    5           good
chromium@382800         144.917371  0.834203    5           good
chromium@382801         214.833181  8.459204    5           bad         <-
chromium@382804         213.588733  2.713776    5           bad
chromium@382831         213.879495  2.505079    5           bad

Bisect job ran on: android_webview_aosp_perf_bisect
Bug ID: 597630

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --also-run-disabled-tests smoothness.key_silk_cases
Test Metric: frame_time_discrepancy/frame_time_discrepancy
Relative Change: 46.11%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_webview_aosp_perf_bisect/builds/105
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9015920952723987744


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=597630

| 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!