Oilpan: revert back to a prefinalizer for LocalDOMWindow.

Source/core/frame/LocalDOMWindow.h

Index: Source/core/frame/LocalDOMWindow.h
diff --git a/Source/core/frame/LocalDOMWindow.h b/Source/core/frame/LocalDOMWindow.h
index 54128d2cc0caa7ef140c363b7909efc279b4a1bf..419ee707f538c4abb15a2795aa6a5b61e5a3f16a 100644
--- a/Source/core/frame/LocalDOMWindow.h
+++ b/Source/core/frame/LocalDOMWindow.h
@@ -66,17 +66,17 @@ enum PageshowEventPersistence {
 // please ping dcheng@chromium.org first. You probably don't want to do that.
 class CORE_EXPORT LocalDOMWindow final : public DOMWindow, public WillBeHeapSupplementable<LocalDOMWindow>, public DOMWindowLifecycleNotifier {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(LocalDOMWindow);
+    WILL_BE_USING_PRE_FINALIZER(LocalDOMWindow, dispose);
 public:
     static PassRefPtrWillBeRawPtr<Document> createDocument(const String& mimeType, const DocumentInit&, bool forceXHTML);
     static PassRefPtrWillBeRawPtr<LocalDOMWindow> create(LocalFrame& frame)
     {
         return adoptRefWillBeNoop(new LocalDOMWindow(frame));
     }
+
     virtual ~LocalDOMWindow();
+    void dispose();
 
-    // LocalDOMWindow is eagerly finalized to allow the destructor
-    // to remove any event listeners still attached.
-    EAGERLY_FINALIZE();
     DECLARE_VIRTUAL_TRACE();
 
     PassRefPtrWillBeRawPtr<Document> installNewDocument(const String& mimeType, const DocumentInit&, bool forceXHTML = false);