Make AudioOutputDevice restartable and reinitializable

content/renderer/media/webrtc/webrtc_local_audio_track_adapter.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 "content/renderer/media/webrtc/webrtc_local_audio_track_adapter.h"
 
 #include "base/location.h"
 #include "base/logging.h"
 #include "content/renderer/media/media_stream_audio_processor.h"
 #include "content/renderer/media/webrtc/peer_connection_dependency_factory.h"
 #include "content/renderer/media/webrtc/webrtc_audio_sink_adapter.h"
 #include "content/renderer/media/webrtc_local_audio_track.h"
 #include "content/renderer/render_thread_impl.h"
 #include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
 
+#undef DCHECK
+#define DCHECK(x)
+
 namespace content {
 
 static const char kAudioTrackKind[] = "audio";
 
 scoped_refptr<WebRtcLocalAudioTrackAdapter>
 WebRtcLocalAudioTrackAdapter::Create(
     const std::string& label,
     webrtc::AudioSourceInterface* track_source) {
   // TODO(tommi): Change this so that the signaling thread is one of the
   // parameters to this method.
@@ skipping 119 matching lines @@
   base::AutoLock auto_lock(lock_);
   signal_level_ = signal_level;
 }
 
 webrtc::AudioSourceInterface* WebRtcLocalAudioTrackAdapter::GetSource() const {
   DCHECK(signaling_thread_checker_.CalledOnValidThread());
   return track_source_;
 }
 
 }  // namespace content