GitLab

Create a virtual device when two nodes share the same device because
a pinned stream only can pin to a device not a node. The code are
modified from ProcessVirtualDeviceName in audio_manager_chromeos.cc.

BUG=b:173113548

Change-Id: Ie0d2ecd8c405aebb94e947c8150b2c47346411b5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2534994Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#828078}