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

Source/core/html/shadow/PickerIndicatorElement.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
     virtual ~PickerIndicatorElement();
     void openPopup();
     void closePopup();
     virtual bool willRespondToMouseClickEvents() OVERRIDE;
     void removePickerIndicatorOwner() { m_pickerIndicatorOwner = 0; }
 
     // DateTimeChooserClient implementation.
     virtual void didChooseValue(const String&) OVERRIDE;
     virtual void didEndChooser() OVERRIDE;
 
+    virtual void acceptHeapVisitor(Visitor*) const OVERRIDE;
+
 private:
     PickerIndicatorElement(Handle<Document>, PickerIndicatorOwner&);
     virtual RenderObject* createRenderer(RenderArena*, RenderStyle*) OVERRIDE;
     virtual void defaultEventHandler(Event*) OVERRIDE;
     virtual void detach() OVERRIDE;
 
     Result<HTMLInputElement> hostInput();
 
     PickerIndicatorOwner* m_pickerIndicatorOwner;
     RefPtr<DateTimeChooser> m_chooser;
 };
 
 }
 #endif
 #endif