All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=795771

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2ab0fea6c234bbd2f7e97067ceb93c33ca7902fabb922448c35d5d7ed03cfe8d


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

android-nexus5
android-nexus5X
android-nexus6
android-nexus7v2
android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8959854794124835296

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

Hi ericrk@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 : Eric Karl
  Commit : 7452277311e15a3459b4fb6fa428840c6afde4df
  Date   : Sat Dec 16 21:42:32 2017
  Subject: Revert "Remove use of DeferredTextureImageData APIs and Support Decode to Scale"

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : smoothness.gpu_rasterization_and_decoding.image_decoding_cases
  Metric       : mean_frame_time/yuv_decoding.html
  Change       : 34.65% | 42.4488333333 -> 57.1586666667

Revision             Result                  N
chromium@524612      42.4488 +- 2.83823      6      good
chromium@524613      57.4435 +- 3.02752      6      bad       <--
chromium@524614      57.6277 +- 3.624        6      bad
chromium@524616      57.1587 +- 3.78504      6      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 --story-filter=yuv.decoding.html smoothness.gpu_rasterization_and_decoding.image_decoding_cases

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8959854794124835296


For feedback, file a bug with component Speed>Bisection

 Issue 795773  has been merged into this issue.

 Issue 795772  has been merged into this issue.

The original change caused perf and memory regressions as well, so had to revert to fix these (which removed the perf improvements you see here). Will re-land this once I've figured out how to address the original issues.