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Add two metrics tracking repeat usage on shelf and in quick settings.
Add one metric to track user actions in quick setting media controls.

Bug: 1136254
Change-Id: I7da5afc7146a841c52b8adaedf0bd92242479957
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2458855Reviewed-by: Tommy Steimel <steimel@chromium.org>
Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Commit-Queue: Jazz Xu <jazzhsu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815339}