Support the Aec dump for the APM in chrome

content/renderer/media/media_stream_audio_processor.cc

 // Copyright 2013 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/media_stream_audio_processor.h"
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "content/public/common/content_switches.h"
 #include "content/renderer/media/media_stream_audio_processor_options.h"
@@ skipping 170 matching lines @@
 }
 
 const media::AudioParameters& MediaStreamAudioProcessor::InputFormat() const {
   return capture_converter_->source_parameters();
 }
 
 const media::AudioParameters& MediaStreamAudioProcessor::OutputFormat() const {
   return capture_converter_->sink_parameters();
 }
 
+void MediaStreamAudioProcessor::StartAecDump(
+    const base::PlatformFile& aec_dump_file) {
+  if (audio_processing_)
+    StartEchoCancellationDump(audio_processing_.get(), aec_dump_file);
+}
+
+void MediaStreamAudioProcessor::StopAecDump() {
+  if (audio_processing_)
+    StopEchoCancellationDump(audio_processing_.get());
+}
+
 void MediaStreamAudioProcessor::OnPlayoutData(media::AudioBus* audio_bus,
                                               int sample_rate,
                                               int audio_delay_milliseconds) {
   DCHECK(render_thread_checker_.CalledOnValidThread());
 #if defined(OS_ANDROID) || defined(OS_IOS)
   DCHECK(audio_processing_->echo_control_mobile()->is_enabled());
 #else
   DCHECK(audio_processing_->echo_cancellation()->is_enabled());
 #endif
 
@@ skipping 222 matching lines @@
   // Return 0 if the volume has not been changed, otherwise return the new
   // volume.
   return (agc->stream_analog_level() == volume) ?
       0 : agc->stream_analog_level();
 }
 
 void MediaStreamAudioProcessor::StopAudioProcessing() {
   if (!audio_processing_.get())
     return;
 
+  StopAecDump();
+
   if (playout_data_source_)
     playout_data_source_->RemovePlayoutSink(this);
 
   audio_processing_.reset();
 }
 
 }  // namespace content