Remove duplicate application cpp files in mojo/application.

mojo/application/public/cpp/app_lifetime_helper.h

 // Copyright 2015 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 MOJO_APPLICATION_APP_LIFETIME_HELPER_H_
-#define MOJO_APPLICATION_APP_LIFETIME_HELPER_H_
+#ifndef MOJO_APPLICATION_PUBLIC_CPP_APP_LIFETIME_HELPER_H_
+#define MOJO_APPLICATION_PUBLIC_CPP_APP_LIFETIME_HELPER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/single_thread_task_runner.h"
 
 namespace mojo {
 
 class AppLifetimeHelper;
 
 // A service implementation should keep this object as a member variable to hold
@@ skipping 49 matching lines @@
   void AddRef();
   void Release();
 
   int ref_count_;
 
   DISALLOW_COPY_AND_ASSIGN(AppLifetimeHelper);
 };
 
 }  // namespace mojo
 
-#endif  // MOJO_APPLICATION_APP_LIFETIME_HELPER_H_
+#endif  // MOJO_APPLICATION_PUBLIC_CPP_APP_LIFETIME_HELPER_H_