Add VideoPacket struct for video packets. Refactor Decode interface to use it.

remoting/protocol/protobuf_video_reader.h

Index: remoting/protocol/protobuf_video_reader.h
diff --git a/remoting/protocol/protobuf_video_reader.h b/remoting/protocol/protobuf_video_reader.h
index 669cd0b03f6ebd5ba7bbebf2f2dd27392d3198f7..42e1c97f8bd013ee2fd3e4568055f9e6a01818d0 100644
--- a/remoting/protocol/protobuf_video_reader.h
+++ b/remoting/protocol/protobuf_video_reader.h
@@ -5,6 +5,7 @@
 #ifndef REMOTING_PROTOCOL_PROTOBUF_VIDEO_READER_H_
 #define REMOTING_PROTOCOL_PROTOBUF_VIDEO_READER_H_
 
+#include "remoting/proto/video.pb.h"
 #include "remoting/protocol/message_reader.h"
 #include "remoting/protocol/video_reader.h"
 
@@ -15,7 +16,7 @@ class Session;
 
 class ProtobufVideoReader : public VideoReader {
  public:
-  ProtobufVideoReader();
+  ProtobufVideoReader(VideoPacketFormat::Encoding encoding);
   virtual ~ProtobufVideoReader();
 
   // VideoReader interface.
@@ -25,6 +26,8 @@ class ProtobufVideoReader : public VideoReader {
  private:
   void OnNewData(VideoPacket* packet);
 
+  VideoPacketFormat::Encoding encoding_;
+
   MessageReader reader_;
 
   // The stub that processes all received packets.