Changed MessageReader so that it doesn't read from the socket if there are

remoting/base/compound_buffer.h

Index: remoting/base/compound_buffer.h
diff --git a/remoting/base/compound_buffer.h b/remoting/base/compound_buffer.h
index eef8d13c939ce22bf5f526ee9df41e3c354e15dd..cf922425e57ca1fcbee4f667fd284ce2f51fb5f9 100644
--- a/remoting/base/compound_buffer.h
+++ b/remoting/base/compound_buffer.h
@@ -105,6 +105,8 @@ class CompoundBufferInputStream
   explicit CompoundBufferInputStream(const CompoundBuffer* buffer);
   virtual ~CompoundBufferInputStream();
 
+  int position() const { return position_; }
+
   // google::protobuf::io::ZeroCopyInputStream interface.
   virtual bool Next(const void** data, int* size);
   virtual void BackUp(int count);