Merge 269345 "[FileAPI] Clean up WebFileSystemImpl before Blink ..."

content/child/child_thread.cc

Index: content/child/child_thread.cc
===================================================================
--- content/child/child_thread.cc	(revision 269973)
+++ content/child/child_thread.cc	(working copy)
@@ -29,6 +29,7 @@
 #include "content/child/child_resource_message_filter.h"
 #include "content/child/child_shared_bitmap_manager.h"
 #include "content/child/fileapi/file_system_dispatcher.h"
+#include "content/child/fileapi/webfilesystem_impl.h"
 #include "content/child/power_monitor_broadcast_source.h"
 #include "content/child/quota_dispatcher.h"
 #include "content/child/quota_message_filter.h"
@@ -343,6 +344,7 @@
   // safely shutdown blink in their Shutdown implementation.
   file_system_dispatcher_.reset();
   quota_dispatcher_.reset();
+  WebFileSystemImpl::DeleteThreadSpecificInstance();
 }
 
 void ChildThread::OnChannelConnected(int32 peer_pid) {