Attempt to fix audio wedges by restarting all streams.

media/audio/audio_manager_base.cc

Index: media/audio/audio_manager_base.cc
diff --git a/media/audio/audio_manager_base.cc b/media/audio/audio_manager_base.cc
index 7e5910b2fc8a19a9cb38fa57f9ac408f79cc3ef3..c9495e95344eafaa46ef26f7f60d4629a6046a4d 100644
--- a/media/audio/audio_manager_base.cc
+++ b/media/audio/audio_manager_base.cc
@@ -419,4 +419,18 @@ int AudioManagerBase::GetUserBufferSize() {
   return 0;
 }
 
+void AudioManagerBase::FixWedgedAudio() {
+  DCHECK(message_loop_->BelongsToCurrentThread());
+  // Close all active streams across all dispatchers.

[scherkus (not reviewing), 2013/12/02 21:49:37]

these two comments aren't very helpful

it'd be more helpful to explain why we need two separate for loops instead of
calling CloseSFWF() and RestartSFWF() back-to-back in the same loop

[DaleCurtis, 2013/12/02 22:52:08]

Done.

+  for (AudioOutputDispatchers::iterator it = output_dispatchers_.begin();
+       it != output_dispatchers_.end(); ++it) {
+    (*it)->dispatcher->CloseStreamsForWedgeFix();
+  }
+  // Recreate all active streams across all dispatchers.
+  for (AudioOutputDispatchers::iterator it = output_dispatchers_.begin();
+       it != output_dispatchers_.end(); ++it) {
+    (*it)->dispatcher->RestartStreamsForWedgeFix();
+  }
+}
+
 }  // namespace media