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This change adds IPC message declarations, senders, and receivers for
communicating between the renderer and browser that audio device
changing is no longer possible.

When the audio output device cannot be changed, the Global Media
Controls UI should not display a device picker. This change is a part
of a series of changes for appropriately hiding this UI.

Bug: 1120620
Change-Id: Ib5610fa95d56f284e1957c59bd4f098112c1a81a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2368285
Commit-Queue: Noah Rose Ledesma <noahrose@google.com>
Reviewed-by: Nasko Oskov <nasko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802305}