Exposes a shlib interface for media/audio path.

chromecast/public/cast_media_shlib.h

Index: chromecast/public/cast_media_shlib.h
diff --git a/chromecast/public/cast_media_shlib.h b/chromecast/public/cast_media_shlib.h
index 8b776da8a43504a11ddaf9eb2ee24d361c4419a9..5c7d012a742b3c65189f5354439fdd063a976ff8 100644
--- a/chromecast/public/cast_media_shlib.h
+++ b/chromecast/public/cast_media_shlib.h
@@ -13,6 +13,7 @@
 namespace chromecast {
 namespace media {
 
+class CastAudioOutputDevice;
 class VideoPlane;
 
 // Provides access to platform-specific media systems and hardware resources.
@@ -39,6 +40,11 @@ class CHROMECAST_EXPORT CastMediaShlib {
   // While an implementation is in an initialized state, this function may be
   // called at any time.  The VideoPlane object must be destroyed in Finalize.
   static VideoPlane* GetVideoPlane();
+
+  // Gets the CastAudioOutputDevice instance, which will be used to provide
+  // CastAudioOutputStreams. The returned instance is owned by this class, and
+  // may be destroyed in Finalize().
+  static CastAudioOutputDevice* GetAudioOutputDevice();
 };
 
 }  // namespace media