Going to suppress.

Generated image is missing some elements compared to reference image.
http://chromium-browser-gpu-tests.commondatastorage.googleapis.com/view_test_results.html?26977a4c1022bce5783ef8e587e5191f80a20a81_Mac_FYI_Experimental_Release_Intel__telemetry

Fernando: could you take a look at this? It's a bug in OffscreenCanvas that seems to only affect Macs with Intel GPUs running 10.13.5. The test was passing on 10.13.4.

Actually, the following builds passed, so looks like it's flaky.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2b15f5bd442f21b2c2332f93784c9f721217f021

commit 2b15f5bd442f21b2c2332f93784c9f721217f021
Author: Yuly Novikov <ynovikov@chromium.org>
Date: Thu Jun 28 23:47:11 2018

Suppress a Flaky pixel_test

Pixel_OffscreenCanvasTransferBeforeStyleResize on Mac Intel HighSierra

TBR=kbr@chromium.org

Bug: 857578
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: Ie29b7978a7328bb3c47f722bd695839aa76c1eca
Reviewed-on: https://chromium-review.googlesource.com/1119070
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#571328}
[modify] https://crrev.com/2b15f5bd442f21b2c2332f93784c9f721217f021/content/test/gpu/gpu_tests/pixel_expectations.py

It looks like this is flaky on 10.12 too per  Issue 859854 .

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac%20Release%20%28Intel%29/91873
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac%20Release%20%28Intel%29/91855

http://chromium-browser-gpu-tests.commondatastorage.googleapis.com/view_test_results.html?015707c1649fe5bf0fb7b51150358bfb056ed0f6_Mac_Release_Intel__telemetry

http://chromium-browser-gpu-tests.commondatastorage.googleapis.com/view_test_results.html?aec6172c47282ee03ab910b8311bca65812d7dc2_Mac_Release_Intel__telemetry

http://chromium-browser-gpu-tests.commondatastorage.googleapis.com/view_test_results.html?aec6172c47282ee03ab910b8311bca65812d7dc2_Mac_Release_Intel__telemetry

Sometimes the generated image is missing the interior green portion.

 Issue 859854  has been merged into this issue.