remoting: Add out-of-line copy ctors for complex classes.

remoting/base/compound_buffer.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // CompoundBuffer implements a data buffer that is composed of several pieces,
 // each stored in a refcounted IOBuffer. It is needed for encoding/decoding
 // video pipeline to represent data packet and minimize data copying.
 // It is particularly useful for splitting data between multiple RTP packets
 // and assembling them into one buffer on the receiving side.
 //
@@ skipping 68 matching lines @@
 
   // Clears the buffer, and initializes it with the interval from |buffer|
   // starting at |start| and ending at |end|. The data itself isn't copied.
   void CopyFrom(const CompoundBuffer& source, int start, int end);
 
  private:
   friend class CompoundBufferInputStream;
 
   struct DataChunk {
     DataChunk(net::IOBuffer* buffer, const char* start, int size);
+    DataChunk(const DataChunk& other);
     ~DataChunk();
 
     scoped_refptr<net::IOBuffer> buffer;
     const char* start;
     int size;
   };
   typedef std::deque<DataChunk> DataChunkList;
 
   DataChunkList chunks_;
   int total_bytes_;
@@ skipping 22 matching lines @@
 
   size_t current_chunk_;
   int current_chunk_position_;
   int position_;
   int last_returned_size_;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_BASE_COMPOUND_BUFFER_H_