ipc: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

ipc/ipc_sync_message_filter.h

Index: ipc/ipc_sync_message_filter.h
diff --git a/ipc/ipc_sync_message_filter.h b/ipc/ipc_sync_message_filter.h
index 49c3ca031719ce0708c48f63d10327fcd3f4b3dd..ee6677ef31011185dcb1b2d59c4d92a4e586a956 100644
--- a/ipc/ipc_sync_message_filter.h
+++ b/ipc/ipc_sync_message_filter.h
@@ -15,7 +15,7 @@
 #include "ipc/message_filter.h"
 
 namespace base {
-class MessageLoopProxy;
+class SingleThreadTaskRunner;
 class WaitableEvent;
 }
 
@@ -51,10 +51,10 @@ class IPC_EXPORT SyncMessageFilter : public MessageFilter, public Sender {
   Sender* sender_;
 
   // The process's main thread.
-  scoped_refptr<base::MessageLoopProxy> listener_loop_;
+  scoped_refptr<base::SingleThreadTaskRunner> listener_task_runner_;
 
   // The message loop where the Channel lives.
-  scoped_refptr<base::MessageLoopProxy> io_loop_;
+  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   typedef std::set<PendingSyncMsg*> PendingSyncMessages;
   PendingSyncMessages pending_sync_messages_;