GitLab

Changing audio sinks on pepper players is not supported. The mock media
session player observer needs to have OnSetSinkId implemented.

Bug: 1096246
Change-Id: Ie08b36cff98f4beb2a4148e0bd05e27e993308f4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2295748
Commit-Queue: Noah Rose Ledesma <noahrose@google.com>
Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#794772}