Port RendererPixelTests to shared image

This allows further reduce our dependency on GL.

Bug: None
Change-Id: Ie9d606bbaabda7ee0c0055750653ef1281fedf63
Reviewed-on: https://chromium-review.googlesource.com/c/1406290
Reviewed-by: Eric Karl <ericrk@chromium.org>
Commit-Queue: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622076}
6 files changed