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

media/base/audio_shifter.cc

 // Copyright (c) 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/base/audio_shifter.h"
 
 #include <algorithm>
 #include <cmath>
 #include <utility>
 
@@ skipping 64 matching lines @@
   base::TimeTicks previous_;
 };
 
 AudioShifter::AudioQueueEntry::AudioQueueEntry(
     base::TimeTicks target_playout_time_,
     scoped_ptr<AudioBus> audio_) :
     target_playout_time(target_playout_time_),
     audio(audio_.release()) {
 }
 
+AudioShifter::AudioQueueEntry::AudioQueueEntry(const AudioQueueEntry& other) =
+    default;
+
 AudioShifter::AudioQueueEntry::~AudioQueueEntry() {}
 
 AudioShifter::AudioShifter(base::TimeDelta max_buffer_size,
                            base::TimeDelta clock_accuracy,
                            base::TimeDelta adjustment_time,
                            int rate,
                            int channels)
     : max_buffer_size_(max_buffer_size),
       clock_accuracy_(clock_accuracy),
       adjustment_time_(adjustment_time),
@@ skipping 178 matching lines @@
 }
 
 void AudioShifter::Zero(AudioBus* output) {
   output->Zero();
   running_ = false;
   previous_playout_time_ = base::TimeTicks();
   bias_ = base::TimeDelta();
 }
 
 }  // namespace media