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

media/base/bitstream_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.
 
 #ifndef MEDIA_BASE_BITSTREAM_BUFFER_H_
 #define MEDIA_BASE_BITSTREAM_BUFFER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 10 matching lines @@
 // data.  This is the media-namespace equivalent of PP_VideoBitstreamBuffer_Dev.
 class MEDIA_EXPORT BitstreamBuffer {
  public:
   BitstreamBuffer(int32_t id, base::SharedMemoryHandle handle, size_t size);
 
   BitstreamBuffer(int32_t id,
                   base::SharedMemoryHandle handle,
                   size_t size,
                   base::TimeDelta presentation_timestamp);
 
+  BitstreamBuffer(const BitstreamBuffer& other);
+
   ~BitstreamBuffer();
 
   void SetDecryptConfig(const DecryptConfig& decrypt_config);
 
   int32_t id() const { return id_; }
   base::SharedMemoryHandle handle() const { return handle_; }
   size_t size() const { return size_; }
 
   // The timestamp is only valid if it's not equal to |media::kNoTimestamp()|.
   base::TimeDelta presentation_timestamp() const {
@@ skipping 23 matching lines @@
   std::string key_id_;                      // key ID.
   std::string iv_;                          // initialization vector
   std::vector<SubsampleEntry> subsamples_;  // clear/cypher sizes
 
   // Allow compiler-generated copy & assign constructors.
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_BITSTREAM_BUFFER_H_