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This is part of the display compositor so belongs in viz not with the
cc layer compositor.

R=staraz@chromium.org

Bug: 722935
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ie8c19de1350375de05172c46b50c816f5d095de6
Reviewed-on: https://chromium-review.googlesource.com/668956
Commit-Queue: danakj <danakj@chromium.org>
Reviewed-by: Xingyu Zhang <staraz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#502882}