Build fix with gcc 4.8 and C++11 enabled

ipc/ipc_test_sink.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IPC_IPC_TEST_SINK_H_
 #define IPC_IPC_TEST_SINK_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 60 matching lines @@
 // To hook up the sink, all you need to do is call OnMessageReceived when a
 // message is received.
 class TestSink : public Channel {
  public:
   TestSink();
   virtual ~TestSink();
 
   // Interface in IPC::Channel. This copies the message to the sink and then
   // deletes it.
   virtual bool Send(IPC::Message* message) OVERRIDE;
-  virtual bool Connect() WARN_UNUSED_RESULT OVERRIDE;
+  virtual bool Connect() OVERRIDE WARN_UNUSED_RESULT;
   virtual void Close() OVERRIDE;
   virtual base::ProcessId GetPeerPID() const OVERRIDE;
 
 #if defined(OS_POSIX) && !defined(OS_NACL)
   virtual int GetClientFileDescriptor() const OVERRIDE;
   virtual int TakeClientFileDescriptor() OVERRIDE;
 #endif  // defined(OS_POSIX) && !defined(OS_NACL)
 
   // Used by the source of the messages to send the message to the sink. This
   // will make a copy of the message and store it in the list.
@@ skipping 36 matching lines @@
   // The actual list of received messages.
   std::vector<Message> messages_;
   ObserverList<Listener> filter_list_;
 
   DISALLOW_COPY_AND_ASSIGN(TestSink);
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_TEST_SINK_H_