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We can miss applying a transform if we have a transformed, partially
occluded DelegatedRendererLayerImpl with a contributing RenderPass. This
causes the wrong transform to be sent into the occlusion tracker, so
occlusion gets applied incorrectly, which hides desired content.

BUG=379072,390873

Review URL: https://codereview.chromium.org/447193005

Cr-Commit-Position: refs/heads/master@{#288403}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288403 0039d316-1c4b-4281-b951-d872f2087c98