GitLab

Add a list of media sessions and their state
to a new audio focus tab on media internals.

BUG=870418

Change-Id: I654b9444c1abc3f5ae12c29d070627e137f5e137
Reviewed-on: https://chromium-review.googlesource.com/1161500
Commit-Queue: Becca Hughes <beccahughes@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Reviewed-by: Chrome Cunningham <chcunningham@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584216}