All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=703745

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgzLPeqwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgjL6P2QkM


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

android-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8984488502148582176

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : blink_perf.css
  Metric       : CSSPropertyUpdateValue/CSSPropertyUpdateValue

Revision             Result                  N
chromium@457019      2196.67 +- 2324.12      21      good
chromium@457077      2303.95 +- 2535.11      21      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 blink_perf.css

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8984488502148582176

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4949051918778368


| 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 Speed>Bisection.  Thank you!

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8982671289480193008

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : blink_perf.css
  Metric       : CSSPropertyUpdateValue/CSSPropertyUpdateValue

Revision             Result                  N
chromium@457019      2006.98 +- 1872.56      21      good
chromium@457077      2051.44 +- 2206.67      21      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 blink_perf.css

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8982671289480193008

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4949051918778368


| 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 Speed>Bisection.  Thank you!

This alert was found before M-60 branched. Closing as WontFix as this is believed to either be invalid or non-reproducible.