Always set need_audio_processing_ to true in WebRtcLocalAudioTrack.

content/renderer/media/webrtc_local_audio_track.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 "content/renderer/media/webrtc_local_audio_track.h"
 
 #include "content/renderer/media/webrtc_audio_capturer.h"
 #include "content/renderer/media/webrtc_audio_capturer_sink_owner.h"
 #include "third_party/libjingle/source/talk/media/base/audiorenderer.h"
 
@@ skipping 16 matching lines @@
     const scoped_refptr<WebRtcAudioCapturer>& capturer,
     webrtc::AudioSourceInterface* track_source)
     : webrtc::MediaStreamTrack<webrtc::AudioTrackInterface>(label),
       capturer_(capturer),
       track_source_(track_source),
       need_audio_processing_(!capturer->device_id().empty()) {
   // The capturer with a valid device id is using microphone as source,
   // and APM (AudioProcessingModule) is turned on only for microphone data.
   DCHECK(capturer.get());
   DVLOG(1) << "WebRtcLocalAudioTrack::WebRtcLocalAudioTrack()";
+
+  // TODO(tommi): Remove this, feed audio constraints to WebRtcLocalAudioTrack
+  // and check the constraints.  This is here to fix a recent regression whereby
+  // audio processing is not enabled for WebAudio regardless of the hard coded
+  // audio constraints.  For more info: http://crbug.com/277134
+  need_audio_processing_ = true;
 }
 
 WebRtcLocalAudioTrack::~WebRtcLocalAudioTrack() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DVLOG(1) << "WebRtcLocalAudioTrack::~WebRtcLocalAudioTrack()";
   // Users might not call Stop() on the track.
   Stop();
 }
 
 void WebRtcLocalAudioTrack::CaptureData(const int16* audio_data,
@@ skipping 142 matching lines @@
     base::AutoLock auto_lock(lock_);
     sinks = sinks_;
     capturer_ = NULL;
   }
 
   for (SinkList::const_iterator it = sinks.begin(); it != sinks.end(); ++it)
     (*it)->Reset();
 }
 
 }  // namespace content