Refactor MediaStreamImpl::GetAuthorizedDeviceInfoForAudioRenderer.
The new approach is to store the output parameters in the one and only WebRtcAudioCapturer if the constraint chromeRenderToAssociatedSink is set.
This is a temporary solution until the new output device enumeration is ready.
The reason for this refactoring is to be able to remove the use of UserMediaRequestInfo in MediaStreamImpl once a request has completed.
Functions needed for creating renderers for the media stream player will be refactored to a separate class. See https://codereview.chromium.org/
24580002/.
BUG=293304
Review URL: https://codereview.chromium.org/
24999003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225965 0039d316-1c4b-4281-b951-d872f2087c98