Change kEnableAudioTrackProcessing to a disable flag and remove finch code

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/public/renderer/media_stream_audio_sink.h"
 #include "content/renderer/media/media_stream_audio_level_calculator.h"
 #include "content/renderer/media/media_stream_audio_processor.h"
 #include "content/renderer/media/media_stream_audio_sink_owner.h"
@@ skipping 95 matching lines @@
   level_calculator_.reset(new MediaStreamAudioLevelCalculator());
 
   base::AutoLock auto_lock(lock_);
   // Remember to notify all sinks of the new format.
   sinks_.TagAll();
 }
 
 void WebRtcLocalAudioTrack::SetAudioProcessor(
     const scoped_refptr<MediaStreamAudioProcessor>& processor) {
   // if the |processor| does not have audio processing, which can happen if
-  // kEnableAudioTrackProcessing is not set or all the constraints in
+  // kDisableAudioTrackProcessing is set set or all the constraints in
   // the |processor| are turned off. In such case, we pass NULL to the
   // adapter to indicate that no stats can be gotten from the processor.
   adapter_->SetAudioProcessor(processor->has_audio_processing() ?
       processor : NULL);
 }
 
 void WebRtcLocalAudioTrack::AddSink(MediaStreamAudioSink* sink) {
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   DVLOG(1) << "WebRtcLocalAudioTrack::AddSink()";
   base::AutoLock auto_lock(lock_);
@@ skipping 115 matching lines @@
 
   for (SinkList::ItemList::const_iterator it = sinks.begin();
        it != sinks.end();
        ++it){
     (*it)->OnReadyStateChanged(blink::WebMediaStreamSource::ReadyStateEnded);
     (*it)->Reset();
   }
 }
 
 }  // namespace content