Remove duplicate application cpp files in mojo/application.

mojo/application/public/cpp/app_lifetime_helper.h

Index: mojo/application/public/cpp/app_lifetime_helper.h
diff --git a/mojo/application/app_lifetime_helper.h b/mojo/application/public/cpp/app_lifetime_helper.h
similarity index 92%
rename from mojo/application/app_lifetime_helper.h
rename to mojo/application/public/cpp/app_lifetime_helper.h
index ad62223e46a431bbbdc1ce207d71a078b4bf5ce7..dd5cb817a6558b43619f9c31ff8375e045c22c5d 100644
--- a/mojo/application/app_lifetime_helper.h
+++ b/mojo/application/public/cpp/app_lifetime_helper.h
@@ -2,8 +2,8 @@
 // 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"
@@ -73,4 +73,4 @@ class AppLifetimeHelper {
 
 }  // namespace mojo
 
-#endif  // MOJO_APPLICATION_APP_LIFETIME_HELPER_H_
+#endif  // MOJO_APPLICATION_PUBLIC_CPP_APP_LIFETIME_HELPER_H_