InlinedVisitor: Migrate dom to use inlined tracing

Source/core/dom/custom/CustomElementLifecycleCallbacks.h

 /*
  * Copyright (C) 2013 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 40 matching lines @@
         AttributeChangedCallback = 1 << 3
     };
 
     bool hasCallback(CallbackType type) const { return m_callbackType & type; }
 
     virtual void created(Element*) = 0;
     virtual void attached(Element*) = 0;
     virtual void detached(Element*) = 0;
     virtual void attributeChanged(Element*, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue) = 0;
 
-    virtual void trace(Visitor*) { }
+    DEFINE_INLINE_VIRTUAL_TRACE() { }
 
 protected:
     explicit CustomElementLifecycleCallbacks(CallbackType type) : m_callbackType(type) { }
 
 private:
     CallbackType m_callbackType;
 };
 
 } // namespace blink
 
 #endif // CustomElementLifecycleCallbacks_h