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Skip promotion of quads to CALayer when the quad's visible rect is
empty. As of crrev.com/c/2095494 we no longer remove fully occluded
quads, but set the visible rect size to empty instead to improve
performance.

Fix CALayerOverlayRPDQTest.TooManyRenderPassDrawQuads to properly
create the first DrawQuad.

Test: CALayerOverlayTest.SkipNonVisible
Bug: 1067513,1022544
Change-Id: Iec9b02ab2e5095cdd718845eea0dd4ca737bea43
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2134774
Commit-Queue: Sasha McIntosh <sashamcintosh@chromium.org>
Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757455}