Stop media stream source when audio capture error occurs.

content/renderer/media/media_stream_audio_source.cc

Index: content/renderer/media/media_stream_audio_source.cc
diff --git a/content/renderer/media/media_stream_audio_source.cc b/content/renderer/media/media_stream_audio_source.cc
index 8db50426ebc4d8b9427ea4bf3cd37dad80ceac5c..8f453c5f7e12d1745a5365ddb2b4ae89db896be6 100644
--- a/content/renderer/media/media_stream_audio_source.cc
+++ b/content/renderer/media/media_stream_audio_source.cc
@@ -5,6 +5,8 @@
 #include "content/renderer/media/media_stream_audio_source.h"
 
 #include "base/bind.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "content/renderer/media/media_stream_audio_track.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
 #include "third_party/WebKit/public/platform/WebString.h"
@@ -14,6 +16,7 @@ namespace content {
 MediaStreamAudioSource::MediaStreamAudioSource(bool is_local_source)
     : is_local_source_(is_local_source),
       is_stopped_(false),
+      task_runner_(base::ThreadTaskRunnerHandle::Get()),
       weak_factory_(this) {
   DVLOG(1) << "MediaStreamAudioSource@" << this << "::MediaStreamAudioSource("
            << (is_local_source_ ? "local" : "remote") << " source)";
@@ -136,4 +139,12 @@ void MediaStreamAudioSource::StopAudioDeliveryTo(MediaStreamAudioTrack* track) {
     MediaStreamSource::StopSource();
 }
 
+void MediaStreamAudioSource::OnAudioCaptureError(const std::string& why) {
+  VLOG(1) << why;
+
+  // Stop source when error occurs.
+  task_runner_->PostTask(
+      FROM_HERE, base::Bind(&MediaStreamSource::StopSource, GetWeakPtr()));
+}
+
 }  // namespace content