[oilpan] The Node hierarchy should have correct accept method chains

Source/core/html/shadow/MediaControlElements.h

Index: Source/core/html/shadow/MediaControlElements.h
diff --git a/Source/core/html/shadow/MediaControlElements.h b/Source/core/html/shadow/MediaControlElements.h
index e9466201f9a387befb43d04cd98b801f5c30226b..7475915298453b8cd1acdca215d18fc6dcde3504 100644
--- a/Source/core/html/shadow/MediaControlElements.h
+++ b/Source/core/html/shadow/MediaControlElements.h
@@ -121,7 +121,7 @@ private:
     virtual const AtomicString& shadowPseudoId() const OVERRIDE;
     virtual void defaultEventHandler(Event*) OVERRIDE;
 
-    MediaControls* m_controls;
+    Member<MediaControls> m_controls;
 };
 
 // ----------------------------
@@ -228,11 +228,12 @@ private:
     virtual const AtomicString& shadowPseudoId() const OVERRIDE;
     virtual void defaultEventHandler(Event*) OVERRIDE;
 
-    typedef Vector<RefPtr<Element> > TrackMenuItems;
+    typedef Vector<Member<Element> > TrackMenuItems;
     TrackMenuItems m_menuItems;
+    // FIXME(oilpan): Implement a weak HashMap.
     typedef HashMap<RefPtr<Element>, RefPtr<TextTrack> > MenuItemToTrackMap;
     MenuItemToTrackMap m_menuToTrackMap;
-    MediaControls* m_controls;
+    Member<MediaControls> m_controls;
     bool m_trackListHasChanged;
 };
 
@@ -255,7 +256,7 @@ private:
     virtual const AtomicString& shadowPseudoId() const OVERRIDE;
     virtual void defaultEventHandler(Event*) OVERRIDE;
 
-    MediaControls* m_controls;
+    Member<MediaControls> m_controls;
 };
 
 // ----------------------------