GitLab

It's no longer necessary now that GpuImageDecoderCache does not rely
on RasterInterface.

Change-Id: I914f2ece1c7ff7b8a98dbf6e2b7100be0631e228
Reviewed-on: https://chromium-review.googlesource.com/956403Reviewed-by: Antoine Labour <piman@chromium.org>
Reviewed-by: Victor Miura <vmiura@chromium.org>
Commit-Queue: Jonathan Backer <backer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542594}