GitLab

Move all checks for if a OverlaySurfaceCandidate is potentially valid
into CanHandleCandidate(). Also simplify CheckOverlaySupport() a bit.

Add a test that exercises DrmOverlayManger caching to ensure that
request for overlay validation gets sent at the right time.

Bug: 930173
Change-Id: I1d0705b76c1b2ba806a207b9e2ba55d161ae60d6
Reviewed-on: https://chromium-review.googlesource.com/c/1495740Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>
Commit-Queue: Michael Spang <spang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636908}