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There are still some missing parts, which I left as TODO.

Change-Id: I5fbe6e6c4e84bde922fb70ee1c8099d446025b6c
Bug: 1023250
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1906863Reviewed-by: Hiroshi Ichikawa <ichikawa@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Hiroshi Ichikawa <ichikawa@chromium.org>
Auto-Submit: Hiroshi Ichikawa <ichikawa@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721821}