Makes AudioOutputProxy -> AudioOutputDispatcher reference weak.

media/audio/audio_manager_base.cc

 // Copyright (c) 2012 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/audio/audio_manager_base.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 260 matching lines @@
   }
 
   DispatcherParams* dispatcher_params =
       new DispatcherParams(params, output_params, output_device_id);
 
   AudioOutputDispatchers::iterator it =
       std::find_if(output_dispatchers_.begin(), output_dispatchers_.end(),
                    CompareByParams(dispatcher_params));
   if (it != output_dispatchers_.end()) {
     delete dispatcher_params;
-    return new AudioOutputProxy((*it)->dispatcher.get());
+    return new AudioOutputProxy((*it)->dispatcher->AsWeakPtr());
   }
 
   const base::TimeDelta kCloseDelay =
       base::TimeDelta::FromSeconds(kStreamCloseDelaySeconds);
   std::unique_ptr<AudioOutputDispatcher> dispatcher;
   if (output_params.format() != AudioParameters::AUDIO_FAKE) {
     dispatcher = base::MakeUnique<AudioOutputResampler>(
         this, params, output_params, output_device_id, kCloseDelay);
   } else {
     dispatcher = base::MakeUnique<AudioOutputDispatcherImpl>(
         this, output_params, output_device_id, kCloseDelay);
   }
 
   dispatcher_params->dispatcher = std::move(dispatcher);
   output_dispatchers_.push_back(dispatcher_params);
-  return new AudioOutputProxy(dispatcher_params->dispatcher.get());
+  return new AudioOutputProxy(dispatcher_params->dispatcher->AsWeakPtr());
 }
 
 void AudioManagerBase::ShowAudioInputSettings() {
 }
 
 void AudioManagerBase::GetAudioInputDeviceNames(
     AudioDeviceNames* device_names) {
 }
 
 void AudioManagerBase::GetAudioOutputDeviceNames(
@@ skipping 119 matching lines @@
 
   return 0;
 }
 
 std::unique_ptr<AudioLog> AudioManagerBase::CreateAudioLog(
     AudioLogFactory::AudioComponent component) {
   return audio_log_factory_->CreateAudioLog(component);
 }
 
 }  // namespace media