VideoCapture: migrate last Renderer-->Host msg and start Host-->Renderer migration

content/renderer/media/video_capture_message_filter.h

Index: content/renderer/media/video_capture_message_filter.h
diff --git a/content/renderer/media/video_capture_message_filter.h b/content/renderer/media/video_capture_message_filter.h
index 92aaba5e7f35b35fb40a5eee86ea0809dcb128c1..4fb71e885c92058f99377a4ef6ed4ccf9be500bf 100644
--- a/content/renderer/media/video_capture_message_filter.h
+++ b/content/renderer/media/video_capture_message_filter.h
@@ -48,10 +48,6 @@ class CONTENT_EXPORT VideoCaptureMessageFilter : public IPC::MessageFilter {
                                   const gfx::Size& coded_size,
                                   const gfx::Rect& visible_rect) = 0;
 
-    // Called when state of a video capture device has changed in the browser
-    // process.
-    virtual void OnStateChanged(VideoCaptureState state) = 0;
-
     // Called when the delegate has been added to filter's delegate list.
     // |device_id| is the device id for the delegate.
     virtual void OnDelegateAdded(int32_t device_id) = 0;
@@ -98,9 +94,6 @@ class CONTENT_EXPORT VideoCaptureMessageFilter : public IPC::MessageFilter {
   // Receive a filled buffer from browser process.
   void OnBufferReceived(const VideoCaptureMsg_BufferReady_Params& params);
 
-  // State of browser process' video capture device has changed.
-  void OnDeviceStateChanged(int device_id, VideoCaptureState state);
-
   // Finds the delegate associated with |device_id|, NULL if not found.
   Delegate* find_delegate(int device_id) const;