Move code in src/remoting to the new callbacks.

remoting/base/base_mock_objects.h

Index: remoting/base/base_mock_objects.h
diff --git a/remoting/base/base_mock_objects.h b/remoting/base/base_mock_objects.h
index 92f17bf98d413f23d3e6d1f968421a7abe959a27..e90530d409c1c2ad16455bcafba76d3a4cbe3b93 100644
--- a/remoting/base/base_mock_objects.h
+++ b/remoting/base/base_mock_objects.h
@@ -20,7 +20,7 @@ class MockEncoder : public Encoder {
   MOCK_METHOD3(Encode, void(
       scoped_refptr<CaptureData> capture_data,
       bool key_frame,
-      DataAvailableCallback* data_available_callback));
+      const DataAvailableCallback& data_available_callback));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockEncoder);