Added plumbing for the availablechange event from Blink to WebPresentationClient.

Source/modules/presentation/NavigatorPresentation.h

 // Copyright 2014 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 NavigatorPresentation_h
 #define NavigatorPresentation_h
 
-#include "core/frame/DOMWindowProperty.h"
 #include "platform/Supplementable.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Navigator;
 class Presentation;
 
 class NavigatorPresentation final
     : public NoBaseWillBeGarbageCollectedFinalized<NavigatorPresentation>
-    , public WillBeHeapSupplement<Navigator>
-    , public DOMWindowProperty {
+    , public WillBeHeapSupplement<Navigator> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorPresentation);
 public:
     virtual ~NavigatorPresentation();
 
     static NavigatorPresentation& from(Navigator&);
     static Presentation* presentation(Navigator&);
 
     virtual void trace(Visitor*) override;
 
 private:
     static const char* supplementName();
 
-    explicit NavigatorPresentation(LocalFrame*);
+    NavigatorPresentation();
 
     Presentation* presentation();
 
     PersistentWillBeMember<Presentation> m_presentation;
 };
 
 } // namespace blink
 
 #endif // NavigatorPresentation_h