[Audio Focus] Stop ducking if paused

If the media session is paused then we should not
apply transient focus types (ducking, pausing). If
the session is resumed then we should reapply those
types.

BUG=931898

Change-Id: Iabcaae24f42e6b3012c8e5098830d1115aecfdca
Reviewed-on: https://chromium-review.googlesource.com/c/1473832
Reviewed-by: Tommy Steimel <steimel@chromium.org>
Commit-Queue: Becca Hughes <beccahughes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#632669}
2 files changed