Workaround for race condition between audio host and renderer

content/browser/renderer_host/media/audio_sync_reader.h

Index: content/browser/renderer_host/media/audio_sync_reader.h
===================================================================
--- content/browser/renderer_host/media/audio_sync_reader.h	(revision 98956)
+++ content/browser/renderer_host/media/audio_sync_reader.h	(working copy)
@@ -9,6 +9,7 @@
 #include "base/file_descriptor_posix.h"
 #include "base/process.h"
 #include "base/sync_socket.h"
+#include "base/time.h"
 #include "media/audio/audio_output_controller.h"
 
 namespace base {
@@ -40,6 +41,7 @@
 
  private:
   base::SharedMemory* shared_memory_;
+  base::Time previous_call_time_;
 
   // A pair of SyncSocket for transmitting audio data.
   scoped_ptr<base::SyncSocket> socket_;