The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1fca2b9e10feddc2a473302f4b559cefe64831b3

commit 1fca2b9e10feddc2a473302f4b559cefe64831b3
Author: Hitoshi Yoshida <peria@chromium.org>
Date: Wed Oct 25 05:57:09 2017

sheriff: Suppress failing tests

TBR=robertphillips
NOTRY=true

Bug:  778109 
Change-Id: Ida80299418ea7929538dadf56037a7ed39879c97
Reviewed-on: https://chromium-review.googlesource.com/737649
Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Commit-Queue: Hitoshi Yoshida <peria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#511389}
[modify] https://crrev.com/1fca2b9e10feddc2a473302f4b559cefe64831b3/third_party/WebKit/LayoutTests/TestExpectations

sheriffing: TestExpectations has already changed, so let me remove sheriff label.

This was actually resolved in:

https://chromium-review.googlesource.com/c/chromium/src/+/737855 (Remove flaky Mac 10.11 layout test images)

but I pasted in the wrong bug number.