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This updates the CanPassBeDrawnDirectly logic to allow for
SolidColorDrawQuads, although it still has the requirement
that the quad is opaque with src-over blending.

Bug: 1013735
Change-Id: I433e00561c72f0e8069e7ae1ecf7ab066eb518b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1860936
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: weiliangc <weiliangc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709241}