Let ViEEncoder express resolution requests as Sinkwants

webrtc/call.h

Index: webrtc/call.h
diff --git a/webrtc/call.h b/webrtc/call.h
index 193124ee179879207b7218d26a6d46ee5a48cbd8..fc123a12464e6299caba8cf17d3615c4392c5e6b 100644
--- a/webrtc/call.h
+++ b/webrtc/call.h
@@ -53,19 +53,6 @@ class PacketReceiver {
   virtual ~PacketReceiver() {}
 };
 
-// Callback interface for reporting when a system overuse is detected.
-class LoadObserver {
- public:
-  enum Load { kOveruse, kUnderuse };
-
-  // Triggered when overuse is detected or when we believe the system can take
-  // more load.
-  virtual void OnLoadUpdate(Load load) = 0;
-
- protected:
-  virtual ~LoadObserver() {}
-};
-
 // A Call instance can contain several send and/or receive streams. All streams
 // are assumed to have the same remote endpoint and will share bitrate estimates
 // etc.