First step towards moving AudioDevice from content/ to media/audio.

content/browser/renderer_host/media/audio_input_renderer_host.cc

Index: content/browser/renderer_host/media/audio_input_renderer_host.cc
diff --git a/content/browser/renderer_host/media/audio_input_renderer_host.cc b/content/browser/renderer_host/media/audio_input_renderer_host.cc
index 4af7b61e349cddd8d0daa75dc834d315219bdd64..ef18b45bd0fe689765258bda2878fba504f5e892 100644
--- a/content/browser/renderer_host/media/audio_input_renderer_host.cc
+++ b/content/browser/renderer_host/media/audio_input_renderer_host.cc
@@ -292,7 +292,7 @@ void AudioInputRendererHost::OnSetVolume(int stream_id, double volume) {
 
 void AudioInputRendererHost::SendErrorMessage(int stream_id) {
   Send(new AudioInputMsg_NotifyStreamStateChanged(stream_id,
-                                                  kAudioStreamError));
+                                                  media::kAudioStreamError));
 }
 
 void AudioInputRendererHost::DeleteEntries() {
@@ -334,7 +334,7 @@ void AudioInputRendererHost::OnDeviceStopped(int session_id) {
     CloseAndDeleteStream(entry);
     // Notify the renderer that the state of the input stream has changed.
     Send(new AudioInputMsg_NotifyStreamStateChanged(stream_id,
-                                                    kAudioStreamPaused));
+                                                    media::kAudioStreamPaused));
   }
 
   // Delete the session entry.