Make AudioOutputDevice restartable and reinitializable

content/renderer/media/webrtc_local_audio_track.cc

Index: content/renderer/media/webrtc_local_audio_track.cc
diff --git a/content/renderer/media/webrtc_local_audio_track.cc b/content/renderer/media/webrtc_local_audio_track.cc
index cb48668eaeccc09a670c0a150b5d439e8d515778..78e7bac6f28790b38f34fc8bf20b31a959731beb 100644
--- a/content/renderer/media/webrtc_local_audio_track.cc
+++ b/content/renderer/media/webrtc_local_audio_track.cc
@@ -17,6 +17,8 @@
 #include "content/renderer/media/webrtc/webrtc_local_audio_track_adapter.h"
 #include "content/renderer/media/webrtc_audio_capturer.h"
 
+#include "base/debug/stack_trace.h"
+
 namespace content {
 
 WebRtcLocalAudioTrack::WebRtcLocalAudioTrack(
@@ -54,6 +56,14 @@ media::AudioParameters WebRtcLocalAudioTrack::GetOutputFormat() const {
 void WebRtcLocalAudioTrack::Capture(const media::AudioBus& audio_bus,
                                     base::TimeTicks estimated_capture_time,
                                     bool force_report_nonzero_energy) {
+/*
+  static bool first_time = true;
+  if (first_time) {
+    first_time = false;
+    base::debug::StackTrace st;
+    st.Print();
+  }
+*/
   DCHECK(capture_thread_checker_.CalledOnValidThread());
   DCHECK(!estimated_capture_time.is_null());
 
@@ -99,6 +109,14 @@ void WebRtcLocalAudioTrack::Capture(const media::AudioBus& audio_bus,
 
 void WebRtcLocalAudioTrack::OnSetFormat(
     const media::AudioParameters& params) {
+  printf("******* WebRtcLocalAudioTrack::OnSetFormat %p\n", this);
+//  static bool first_time = true;
+//  if (first_time) {
+//    first_time = false;
+//    base::debug::StackTrace st;
+//    st.Print();
+//  }
+
   DVLOG(1) << "WebRtcLocalAudioTrack::OnSetFormat()";
   // If the source is restarted, we might have changed to another capture
   // thread.