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

chrome/browser/media/media_stream_devices_menu_model.h

Index: chrome/browser/media/media_stream_devices_menu_model.h
diff --git a/chrome/browser/media/media_stream_devices_menu_model.h b/chrome/browser/media/media_stream_devices_menu_model.h
index 3e0a8c5d9ec156c85f059ed72c4f7bb3d5d63666..9e94e7691980f4e6f5ec78f7c7b331f8d72a0529 100644
--- a/chrome/browser/media/media_stream_devices_menu_model.h
+++ b/chrome/browser/media/media_stream_devices_menu_model.h
@@ -21,13 +21,6 @@ class MediaStreamDevicesMenuModel : public ui::SimpleMenuModel,
   explicit MediaStreamDevicesMenuModel(MediaStreamInfoBarDelegate* delegate);
   virtual ~MediaStreamDevicesMenuModel();
 
-  // Returns the |device_id| for the selected device of type |type|. Returns
-  // true if a selected device of the requested |type| was found, and false if
-  // none was found, in which case |device_id| remains untouched.
-  bool GetSelectedDeviceId(
-      content::MediaStreamDeviceType type,
-      std::string* device_id) const;
-
   // ui::SimpleMenuModel::Delegate implementation:
   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;