📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/148692ea640000

📍 Couldn't reproduce a difference.
https://pinpoint-dot-chromeperf.appspot.com/job/148692ea640000

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/14d6f742640000

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6090d22674ffa58c65f9e3163a9345fd2dd74352

commit 6090d22674ffa58c65f9e3163a9345fd2dd74352
Author: Annie Sullivan <sullivan@chromium.org>
Date: Thu Aug 16 15:23:37 2018

Disabling failing blink_perf.image_decoder stories on Win.

Bug: 874810
Change-Id: I11ff44a55b4f2b14b8ba0a4ab5bb4e0f54cd8ef8
TBR: nednguyen@google.com
NOTRY: true
Reviewed-on: https://chromium-review.googlesource.com/1177882
Reviewed-by: Annie Sullivan <sullivan@chromium.org>
Commit-Queue: Annie Sullivan <sullivan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583658}
[modify] https://crrev.com/6090d22674ffa58c65f9e3163a9345fd2dd74352/tools/perf/expectations.config

📍 Found a significant difference after 1 commit.
https://pinpoint-dot-chromeperf.appspot.com/job/14d6f742640000

Hold pre-decoded images until use or 250ms rather than 2 frames by ericrk@chromium.org
https://chromium.googlesource.com/chromium/src/+/520ce5d7136360877309b68ab8b43a7d13c84d82
0 → 0.8 (+0.8)

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bba9dc79de2bd15006cc9f42ebe98f128c8d1d91

commit bba9dc79de2bd15006cc9f42ebe98f128c8d1d91
Author: Ned Nguyen <nednguyen@google.com>
Date: Thu Aug 16 20:40:00 2018

Revert "Disabling failing blink_perf.image_decoder stories on Win."

This reverts commit 6090d22674ffa58c65f9e3163a9345fd2dd74352.

Reason for revert: culprit CL is being reverted in https://chromium-review.googlesource.com/c/chromium/src/+/1178841

Original change's description:
> Disabling failing blink_perf.image_decoder stories on Win.
> 
> Bug: 874810
> Change-Id: I11ff44a55b4f2b14b8ba0a4ab5bb4e0f54cd8ef8
> TBR: nednguyen@google.com
> NOTRY: true
> Reviewed-on: https://chromium-review.googlesource.com/1177882
> Reviewed-by: Annie Sullivan <sullivan@chromium.org>
> Commit-Queue: Annie Sullivan <sullivan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#583658}

TBR=sullivan@chromium.org

Change-Id: Ia80a8b6809d909fff687bd12cace06fe447eb141
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 874810
Reviewed-on: https://chromium-review.googlesource.com/1178861
Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#583798}
[modify] https://crrev.com/bba9dc79de2bd15006cc9f42ebe98f128c8d1d91/tools/perf/expectations.config

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/37d7392b2648e52d2271e49d4aefc5633e391075

commit 37d7392b2648e52d2271e49d4aefc5633e391075
Author: Ned Nguyen <nednguyen@google.com>
Date: Thu Aug 16 22:25:01 2018

Revert "Hold pre-decoded images until use or 250ms rather than 2 frames"

This reverts commit 520ce5d7136360877309b68ab8b43a7d13c84d82.

Reason for revert: breaking blink_perf.image_decoder/* tests

BUG:chromium:874810

Original change's description:
> Hold pre-decoded images until use or 250ms rather than 2 frames
> 
> We currently unlock pre-decoded images after 2 frames of any type. This
> doesn't always give callers a chance to use their images (if main thread
> is a bit backed up). Instead we should wait for the caller to actually
> use the image. Additionally, we drop images after 250ms to prevent
> excessive growth if a user fails to use images in a timely manner.
> 
> See the linked bug for example traces which show the benefits.
> 
> R=​khushalsagar
> 
> Bug: 869491
> Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: Icd94709aad5c076b1ba295495eaab24dc893ebdb
> Reviewed-on: https://chromium-review.googlesource.com/1159203
> Commit-Queue: Eric Karl <ericrk@chromium.org>
> Reviewed-by: Khushal <khushalsagar@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#583171}

TBR=khushalsagar@chromium.org,ericrk@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 869491
Change-Id: Ia80ab26563bf1ccc0556d5638a483337acee972d
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/1178841
Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#583855}
[modify] https://crrev.com/37d7392b2648e52d2271e49d4aefc5633e391075/cc/tiles/decoded_image_tracker.cc
[modify] https://crrev.com/37d7392b2648e52d2271e49d4aefc5633e391075/cc/tiles/decoded_image_tracker.h
[modify] https://crrev.com/37d7392b2648e52d2271e49d4aefc5633e391075/cc/tiles/decoded_image_tracker_unittest.cc
[modify] https://crrev.com/37d7392b2648e52d2271e49d4aefc5633e391075/cc/tiles/tile_manager.cc
[modify] https://crrev.com/37d7392b2648e52d2271e49d4aefc5633e391075/cc/tiles/tile_manager_unittest.cc
[modify] https://crrev.com/37d7392b2648e52d2271e49d4aefc5633e391075/cc/trees/layer_tree_host_impl.cc

Issue 874878 has been merged into this issue.