Use scoped_ptr<> to pass ownership in more places.

remoting/base/encoder.h

Index: remoting/base/encoder.h
diff --git a/remoting/base/encoder.h b/remoting/base/encoder.h
index d1f226a4c293a812734883adc3afe5abac6120c8..73acbdc67768bb678b1b7e952dfdbace3bad1302 100644
--- a/remoting/base/encoder.h
+++ b/remoting/base/encoder.h
@@ -27,9 +27,7 @@ class Encoder {
   // DataAvailableCallback is called as blocks of data are made available
   // from the encoder. Data made available by the encoder is in the form
   // of HostMessage to reduce the amount of memory copies.
-  // The callback takes ownership of the HostMessage and is responsible for
-  // deleting it.
-  typedef base::Callback<void(VideoPacket*)> DataAvailableCallback;
+  typedef base::Callback<void(scoped_ptr<VideoPacket>)> DataAvailableCallback;
 
   virtual ~Encoder() {}