Begin adding support for tab mirroring via the MediaStream audio/video capturing

content/browser/renderer_host/media/audio_input_device_manager.h

Index: content/browser/renderer_host/media/audio_input_device_manager.h
diff --git a/content/browser/renderer_host/media/audio_input_device_manager.h b/content/browser/renderer_host/media/audio_input_device_manager.h
index 3f0b34c451f46cd043ab744b1d78ab7d60d7ca0c..4347ef108adf62cf260377d756aa7c57b8db987a 100644
--- a/content/browser/renderer_host/media/audio_input_device_manager.h
+++ b/content/browser/renderer_host/media/audio_input_device_manager.h
@@ -19,7 +19,7 @@
 #include "content/browser/renderer_host/media/media_stream_provider.h"
 #include "content/common/content_export.h"
 #include "content/common/media/media_stream_options.h"
-#include "media/audio/audio_device_name.h"
+#include "content/public/common/media_stream_request.h"
 
 namespace media {
 class AudioManager;
@@ -29,9 +29,7 @@ namespace media_stream {
 
 class AudioInputDeviceManagerEventHandler;
 
-class CONTENT_EXPORT AudioInputDeviceManager
-    : public base::RefCountedThreadSafe<AudioInputDeviceManager>,
-      public MediaStreamProvider {
+class CONTENT_EXPORT AudioInputDeviceManager : public MediaStreamProvider {
  public:
   // Calling Start() with this kFakeOpenSessionId will open the default device,
   // even though Open() has not been called. This is used to be able to use the
@@ -56,7 +54,6 @@ class CONTENT_EXPORT AudioInputDeviceManager
   void Stop(int session_id);
 
  private:
-  friend class base::RefCountedThreadSafe<AudioInputDeviceManager>;
   virtual ~AudioInputDeviceManager();
 
   // Executed on media stream device thread.
@@ -66,8 +63,8 @@ class CONTENT_EXPORT AudioInputDeviceManager
 
   // Executed on IO thread to call Listener.
   void DevicesEnumeratedOnIOThread(StreamDeviceInfoArray* devices);
-  void OpenedOnIOThread(int session_id);
-  void ClosedOnIOThread(int session_id);
+  void OpenedOnIOThread(content::MediaStreamDeviceType type, int session_id);
+  void ClosedOnIOThread(content::MediaStreamDeviceType type, int session_id);
 
   bool IsOnDeviceThread() const;
 
@@ -78,9 +75,9 @@ class CONTENT_EXPORT AudioInputDeviceManager
   EventHandlerMap event_handlers_;
 
   // Only accessed from media stream device thread.
-  typedef std::map<int, media::AudioDeviceName> AudioInputDeviceMap;
-  AudioInputDeviceMap devices_;
-  media::AudioManager* audio_manager_;
+  typedef std::map<int, StreamDeviceInfo> StreamDeviceMap;
+  StreamDeviceMap devices_;
+  media::AudioManager* const audio_manager_;
 
   // The message loop of media stream device thread that this object runs on.
   scoped_refptr<base::MessageLoopProxy> device_loop_;