Oilpan: turn DOMWindow into a heap supplementable.

Source/core/page/DOMWindowPagePopup.h

Index: Source/core/page/DOMWindowPagePopup.h
diff --git a/Source/core/page/DOMWindowPagePopup.h b/Source/core/page/DOMWindowPagePopup.h
index 9209eb309c253633d544e013bd054b9e41727d6b..2140bdc2c29cfca3d9ff05cb27a72303483e4d4d 100644
--- a/Source/core/page/DOMWindowPagePopup.h
+++ b/Source/core/page/DOMWindowPagePopup.h
@@ -40,18 +40,21 @@ class DOMWindow;
 class PagePopupClient;
 class PagePopupController;
 
-class DOMWindowPagePopup FINAL : public Supplement<DOMWindow> {
+class DOMWindowPagePopup FINAL : public NoBaseWillBeGarbageCollected<DOMWindowPagePopup>, public WillBeHeapSupplement<DOMWindow> {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMWindowPagePopup);
 public:
     static PagePopupController* pagePopupController(DOMWindow&);
     static void install(DOMWindow&, PagePopupClient*);
     static void uninstall(DOMWindow&);
-    virtual ~DOMWindowPagePopup();
+    DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(DOMWindowPagePopup);
+
+    void trace(Visitor*);
 
 private:
     explicit DOMWindowPagePopup(PagePopupClient*);
     static const char* supplementName();
 
-    RefPtrWillBePersistent<PagePopupController> m_controller;
+    RefPtrWillBeMember<PagePopupController> m_controller;
 };
 
 }