All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=769714

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=b2bbdd93f5f715a18a2aa8817b70dffd073edb7bffaaaab7ed8313a8771f509f


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

chromium-rel-win7-dual
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8967203128115621872

=== Auto-CCing suspected CL author mtklein@chromium.org ===

Hi mtklein@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : Mike Klein
  Commit : d286bfbd96f8b7ccf1cbce74f07d2f3917dbec30
  Date   : Sat Sep 16 00:23:46 2017
  Subject: Bump stored lowp uniform color to 16-bit storage.

Bisect Details
  Configuration: winx64_high_dpi_perf_bisect
  Benchmark    : speedometer
  Metric       : AngularJS-TodoMVC/AngularJS-TodoMVC
  Change       : 4.04% | 644.2055 -> 670.25125

Revision                             Result                  N
chromium@502407                      644.206 +- 6.91658      6       good
chromium@502447                      646.309 +- 48.293       14      good
chromium@502458                      638.444 +- 55.3781      14      good
chromium@502463                      644.034 +- 69.6895      21      good
chromium@502465                      640.155 +- 47.7423      14      good
chromium@502466                      645.142 +- 51.3082      21      good
chromium@502466,skia@57372152b2      635.248 +- 22.4965      6       good
chromium@502466,skia@d286bfbd96      656.812 +- 88.8025      21      bad       <--
chromium@502467                      659.219 +- 63.8152      14      bad
chromium@502486                      670.251 +- 34.4616      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 speedometer

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8967203128115621872


For feedback, file a bug with component Speed>Bisection

Looking at the charts, and knowing the CL, I don't believe this is anything but noise.