Fix IndexedDB after r208777.

content/child/indexed_db/indexed_db_message_filter.h

Index: content/child/indexed_db/indexed_db_message_filter.h
===================================================================
--- content/child/indexed_db/indexed_db_message_filter.h	(revision 208777)
+++ content/child/indexed_db/indexed_db_message_filter.h	(working copy)
@@ -14,16 +14,13 @@
 class MessageLoopProxy;
 }  // namespace base
 
-namespace IPC {
-class SyncMessageFilter;
-}
-
 namespace content {
 class IndexedDBDispatcher;
+class ThreadSafeSender;
 
 class IndexedDBMessageFilter : public IPC::ChannelProxy::MessageFilter {
  public:
-  explicit IndexedDBMessageFilter(IPC::SyncMessageFilter* sync_message_filter);
+  explicit IndexedDBMessageFilter(ThreadSafeSender* thread_safe_sender);
 
   // IPC::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
@@ -42,7 +39,7 @@
   void OnStaleUpgradeNeeded(const IndexedDBMsg_CallbacksUpgradeNeeded_Params&);
 
   scoped_refptr<base::MessageLoopProxy> main_thread_loop_proxy_;
-  scoped_refptr<IPC::SyncMessageFilter> sync_message_filter_;
+  scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBMessageFilter);
 };