Remove ContextClient from DOMWindowStorage

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;
 
 class DOMWindowStorage final : public GarbageCollected<DOMWindowStorage>,
-                               public Supplement<LocalDOMWindow>,
-                               public ContextClient {
+                               public Supplement<LocalDOMWindow> {
   USING_GARBAGE_COLLECTED_MIXIN(DOMWindowStorage);
 
  public:
   static DOMWindowStorage& from(LocalDOMWindow&);
   static Storage* sessionStorage(DOMWindow&, ExceptionState&);
   static Storage* localStorage(DOMWindow&, ExceptionState&);
 
   Storage* sessionStorage(ExceptionState&) const;
   Storage* localStorage(ExceptionState&) const;
   Storage* optionalSessionStorage() const { return m_sessionStorage.get(); }
   Storage* optionalLocalStorage() const { return m_localStorage.get(); }
 
   DECLARE_TRACE();
 
  private:
   explicit DOMWindowStorage(LocalDOMWindow&);
   static const char* supplementName();
 
-  Member<LocalDOMWindow> m_window;
   mutable Member<Storage> m_sessionStorage;
   mutable Member<Storage> m_localStorage;
 };
 
 }  // namespace blink
 
 #endif  // DOMWindowStorage_h