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Further CLs will migrate blink code to use these bit by bit.

BUG=1096617

Change-Id: Iceb0090a4ea835cf5a524a7333da65068ee7afb2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2363552Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Chris Hamilton <chrisha@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799594}