Fix the race when the WebRtcAudioDeviceImpl goes away before capturers stop

content/renderer/media/webrtc_audio_device_impl.cc

Index: content/renderer/media/webrtc_audio_device_impl.cc
diff --git a/content/renderer/media/webrtc_audio_device_impl.cc b/content/renderer/media/webrtc_audio_device_impl.cc
index ae37d2074b2f1159605f9cf97197f40f976b5e6b..86b330657d2de4902bc5a3a3d9a0cca6255b492b 100644
--- a/content/renderer/media/webrtc_audio_device_impl.cc
+++ b/content/renderer/media/webrtc_audio_device_impl.cc
@@ -248,7 +248,16 @@ int32_t WebRtcAudioDeviceImpl::Terminate() {
 
   DisableAecDump();
 
-  capturers_.clear();
+  // Stop all the capturers to ensure no further OnData() and
+  // RemoveAudioCapturer() callback.
+  // Cache the captures in a local list since WebRtcAudioCapturer::Stop()

[henrika (OOO until Aug 14), 2014/06/03 11:00:15]

capturers

[no longer working on chromium, 2014/06/03 11:31:14]

Done.

+  // will trigger RemoveAudioCapturer() callback.
+  CapturerList capturers;
+  capturers.swap(capturers_);
+  for (CapturerList::const_iterator iter = capturers.begin();
+       iter != capturers.end(); ++iter) {
+    (*iter)->Stop();
+  }
 
   initialized_ = false;
   return 0;