Supplement should have a Member to the corresponding Supplementable object

third_party/WebKit/Source/modules/storage/DOMWindowStorage.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 DOMWindowStorage_h
 #define DOMWindowStorage_h
 
 #include "core/dom/ContextLifecycleObserver.h"
+#include "core/frame/LocalDOMWindow.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class DOMWindow;
 class ExceptionState;
 class LocalDOMWindow;
 class Storage;
 
@@ skipping 19 matching lines @@
   static const char* supplementName();
 
   Member<LocalDOMWindow> m_window;
   mutable Member<Storage> m_sessionStorage;
   mutable Member<Storage> m_localStorage;
 };
 
 }  // namespace blink
 
 #endif  // DOMWindowStorage_h