GitLab

Allow updating the patterns that the redirector matches to mixer
streams without removing and re-adding the redirector.

Bug: internal b/123626919
Test: cast_audio_backend_unittests
Change-Id: I4f79d9d1c1c95ba213bc1396d9d708fd8bb037bc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1506670Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Commit-Queue: Kenneth MacKay <kmackay@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638691}