Move Frame to the Oilpan heap.

Source/web/ExternalPopupMenu.h

Index: Source/web/ExternalPopupMenu.h
diff --git a/Source/web/ExternalPopupMenu.h b/Source/web/ExternalPopupMenu.h
index 25ac59b74f4875b86464cbcf38e080e72ced3f7a..33c683c91095387b7162f5201987793eeeb361be 100644
--- a/Source/web/ExternalPopupMenu.h
+++ b/Source/web/ExternalPopupMenu.h
@@ -56,7 +56,6 @@ public:
     ExternalPopupMenu(LocalFrame&, PopupMenuClient*, WebViewImpl&);
     virtual ~ExternalPopupMenu();
 
-
     // Fills |info| with the popup menu information contained in the
     // PopupMenuClient associated with this ExternalPopupMenu.
     // FIXME: public only for test access. Need to revert once gtest
@@ -65,6 +64,8 @@ public:
     static int toPopupMenuItemIndex(int index, PopupMenuClient&);
     static int toExternalPopupMenuItemIndex(int index, PopupMenuClient&);
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 private:
     // PopupMenu methods:
     virtual void show(const FloatQuad& controlPosition, const IntSize&, int index) OVERRIDE;
@@ -81,7 +82,7 @@ private:
     void dispatchEvent(Timer<ExternalPopupMenu>*);
 
     PopupMenuClient* m_popupMenuClient;
-    RefPtr<LocalFrame> m_localFrame;
+    RefPtrWillBeMember<LocalFrame> m_localFrame;
     WebViewImpl& m_webView;
     OwnPtr<WebMouseEvent> m_syntheticEvent;
     Timer<ExternalPopupMenu> m_dispatchEventTimer;