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

media/formats/webm/webm_cluster_parser.cc

 // Copyright 2014 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.
 
 #include "media/formats/webm/webm_cluster_parser.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 580 matching lines @@
                                 const scoped_refptr<MediaLog>& media_log)
     : track_num_(track_num),
       is_video_(is_video),
       default_duration_(default_duration),
       estimated_next_frame_duration_(kNoTimestamp()),
       media_log_(media_log) {
   DCHECK(default_duration_ == kNoTimestamp() ||
          default_duration_ > base::TimeDelta());
 }
 
+WebMClusterParser::Track::Track(const Track& other) = default;
+
 WebMClusterParser::Track::~Track() {}
 
 DecodeTimestamp WebMClusterParser::Track::GetReadyUpperBound() {
   DCHECK(ready_buffers_.empty());
   if (last_added_buffer_missing_duration_.get())
     return last_added_buffer_missing_duration_->GetDecodeTimestamp();
 
   return DecodeTimestamp::FromPresentationTime(base::TimeDelta::Max());
 }
 
@@ skipping 264 matching lines @@
 WebMClusterParser::FindTextTrack(int track_num) {
   const TextTrackMap::iterator it = text_track_map_.find(track_num);
 
   if (it == text_track_map_.end())
     return NULL;
 
   return &it->second;
 }
 
 }  // namespace media