GitLab

Make the get_sinks API return sink structs instead of sink name strings.

Bug: 963963
Change-Id: Idb6b555544f29aaa308b8d289335073348c653f5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1615982Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Takumi Fujimoto <takumif@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664485}