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This requires that previously-used textures be returned to the browser compositor before a commit, so they can be uploaded to. This saves memory by reducing the number of textures that need to be created.

Also avoid releasing old textures from renderers on SubmitFrame, as that can be unnecessarily expensive if both the old and new frames reference the same textures.

BUG=446588,446417,446414

Review URL: https://codereview.chromium.org/843633003

Cr-Commit-Position: refs/heads/master@{#310737}