Marking a consistently failing layout test color-profile-image-filter-all.html

virtual/gpu-rasterization/images/color-profile-image-filter-all.html
(likely) started failing from the patch for SlimmingPaintV175. As noted
in the patch, marking it as failing instead of reverting it.

Additionally, marking it as SLOW as it's failing for timeout also on
Mac in addition to Linux and Win which are already specified.

Bug: 771643, 726075
Change-Id: I15771a9e018428d3b729da40491d7bea3f7e2917
Reviewed-on: https://chromium-review.googlesource.com/923768
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Commit-Queue: Takeshi Yoshino <tyoshino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537575}
2 files changed