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This patch moves the responsibility of tracking which tints are used
in a frame to the ResourceManager. When a tinted resource is requested
the ResourceManager tracks it instead of the TabListSceneLayer. When
a frame is finalized, the CompositorView passes a signal to the
ResourceManager to clear out any tinted resources that were not used
in that frame.

Bug: 1111772
Change-Id: I6f71aca94f1f05d413a4b3d0e83c39f11c4b7594
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2334992Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795434}