Make Clang plugin check WeakPtrFactory member order

tools/clang/plugins/tests/weak_ptr_factory.h

 // Copyright (c) 2013 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.
 
-#include "base/process/memory.h"
+#ifndef WEAK_PTR_FACTORY_H_
+#define WEAK_PTR_FACTORY_H_
 
 namespace base {
 
-void EnableTerminationOnOutOfMemory() {
-}
-
-void EnableTerminationOnHeapCorruption() {
-}
-
-bool AdjustOOMScore(ProcessId process, int score) {
-  return false;
-}
+template <typename T>
+class WeakPtrFactory {
+ public:
+  explicit WeakPtrFactory(T*) {}
+};
 
 }  // namespace base
+
+#endif  // WEAK_PTR_FACTORY_H_