Audio input debug recording refactoring to reduce thread hops and simplify object ownership

media/audio/test_audio_input_controller_factory.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/test_audio_input_controller_factory.h"
+#include "media/audio/audio_input_writer.h"
 #include "media/audio/audio_io.h"
 
 namespace media {
 
 TestAudioInputController::TestAudioInputController(
     TestAudioInputControllerFactory* factory,
     AudioManager* audio_manager,
     const AudioParameters& audio_parameters,
     EventHandler* event_handler,
     SyncWriter* sync_writer,
     UserInputMonitor* user_input_monitor)
     : AudioInputController(event_handler,
                            sync_writer,
+                           nullptr,
                            user_input_monitor,
                            false),
       audio_parameters_(audio_parameters),
       factory_(factory),
       event_handler_(event_handler) {
   task_runner_ = audio_manager->GetTaskRunner();
 }
 
 TestAudioInputController::~TestAudioInputController() {
   // Inform the factory so that it allows creating new instances in future.
@@ skipping 31 matching lines @@
   return controller_;
 }
 
 void TestAudioInputControllerFactory::OnTestAudioInputControllerDestroyed(
     TestAudioInputController* controller) {
   DCHECK_EQ(controller_, controller);
   controller_ = NULL;
 }
 
 }  // namespace media