Append solid color quad in SurfaceLayerImpl if SurfaceRange is invalid

We should at least show the default background color if there is no
surface to show. Not doing so will reveal the content underneath the
layer.

Bug: 942315
Change-Id: I743ad6eb7a3e49daff83186e4b066defb97185e3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1572553
Reviewed-by: enne <enne@chromium.org>
Commit-Queue: Saman Sami <samans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653456}
2 files changed