Check media permissions through RenderFrameHostDelegate.

content/browser/renderer_host/media/media_stream_ui_proxy.h

Index: content/browser/renderer_host/media/media_stream_ui_proxy.h
diff --git a/content/browser/renderer_host/media/media_stream_ui_proxy.h b/content/browser/renderer_host/media/media_stream_ui_proxy.h
index 810a29a5d812568f2397ed6e5dbe2ef2699d9523..61ef195dd3536900f5a209357a5289e8bdae5813 100644
--- a/content/browser/renderer_host/media/media_stream_ui_proxy.h
+++ b/content/browser/renderer_host/media/media_stream_ui_proxy.h
@@ -41,6 +41,15 @@ class CONTENT_EXPORT MediaStreamUIProxy {
   virtual void RequestAccess(const MediaStreamRequest& request,
                              const ResponseCallback& response_callback);
 
+  // Checks if we have permission to access the microphone or camera. Note that
+  // this does not query the user. |type| must be MEDIA_DEVICE_AUDIO_CAPTURE
+  // or MEDIA_DEVICE_VIDEO_CAPTURE.
+  virtual void CheckAccess(const GURL& security_origin,
+                           MediaStreamType type,
+                           int render_process_id,
+                           int render_frame_id,
+                           const base::Callback<void(bool)>& callback);
+
   // Notifies the UI that the MediaStream has been started. Must be called after
   // access has been approved using RequestAccess(). |stop_callback| is be
   // called on the IO thread after the user has requests the stream to be
@@ -65,6 +74,8 @@ class CONTENT_EXPORT MediaStreamUIProxy {
   void ProcessStopRequestFromUI();
   void OnWindowId(const WindowIdCallback& window_id_callback,
                   gfx::NativeViewId* window_id);
+  void OnCheckedAccess(const base::Callback<void(bool)>& callback,
+                       bool have_access);
 
   scoped_ptr<Core, content::BrowserThread::DeleteOnUIThread> core_;
   ResponseCallback response_callback_;