Revert of Switching AudioOutputAuthorizationHandler from using AudioManager interface to AudioSystem one.

content/browser/renderer_host/media/audio_renderer_host.h

Index: content/browser/renderer_host/media/audio_renderer_host.h
diff --git a/content/browser/renderer_host/media/audio_renderer_host.h b/content/browser/renderer_host/media/audio_renderer_host.h
index dda8b387c9ac7828cf6a1b53323d0df1b25811c4..0d0ca36b3ea711a4bf5f7b3aaca89bb47b10abf0 100644
--- a/content/browser/renderer_host/media/audio_renderer_host.h
+++ b/content/browser/renderer_host/media/audio_renderer_host.h
@@ -60,7 +60,6 @@
 namespace media {
 class AudioManager;
 class AudioParameters;
-class AudioSystem;
 }
 
 namespace content {
@@ -75,7 +74,6 @@
   // Called from UI thread from the owner of this object.
   AudioRendererHost(int render_process_id,
                     media::AudioManager* audio_manager,
-                    media::AudioSystem* audio_system,
                     AudioMirroringManager* mirroring_manager,
                     MediaStreamManager* media_stream_manager,
                     const std::string& salt);