This was due to a bad baseline in https://codereview.chromium.org/2935363002

These baselines actually look wrong. I'm going to suppress this failure for now.

Actually, I think I can handle this

Patch in the queue: https://chromium-review.googlesource.com/c/540141/

This patch failed to fix the problem. This test is just flaky on all platforms. I will suppress the test and assign to the paint team for triage.

Ah, good ol' background-blend-mode-gif-color-2.html.

That test needs some TLC, it's super fragile - see  issue 729075  also.

(recent timing changes in Skia blending might have exacerbated its flakiness)

https://chromium-review.googlesource.com/c/540787/ has landed (accidentally put the wrong bug id) so this is now suppressed and ready for someone to look into further.

Florin to the rescue!
https://chromium-review.googlesource.com/c/541037/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/24c9f587451ae73f0a3d826dccb362913fb2ddc6

commit 24c9f587451ae73f0a3d826dccb362913fb2ddc6
Author: Florin Malita <fmalita@chromium.org>
Date: Wed Jun 21 01:44:53 2017

Deflake background-blend-mode-gif-color-2.html

The test is attempting to catch the second frame of an animated GIF
(2 x 400ms frames) using setTimeout(400).  This is super-fragile.

Refactor to use advanceImageAnimation() intead.

BUG= chromium:734733 , chromium:729075 

Change-Id: I1528e602bed7f9599cb3bbf9a2821354a2e7aaef
Reviewed-on: https://chromium-review.googlesource.com/541037
Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481075}
[modify] https://crrev.com/24c9f587451ae73f0a3d826dccb362913fb2ddc6/third_party/WebKit/LayoutTests/TestExpectations
[modify] https://crrev.com/24c9f587451ae73f0a3d826dccb362913fb2ddc6/third_party/WebKit/LayoutTests/css3/blending/background-blend-mode-gif-color-2-expected.png
[modify] https://crrev.com/24c9f587451ae73f0a3d826dccb362913fb2ddc6/third_party/WebKit/LayoutTests/css3/blending/background-blend-mode-gif-color-2.html

 Issue 729075  has been merged into this issue.