InlinedVisitor: Migrate html to use inlined tracing

Source/core/html/TextMetrics.h

 /*
  * Copyright (C) 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 56 matching lines @@
 
     float hangingBaseline() const { return m_hangingBaseline; }
     void setHangingBaseline(float hangingBaseline) { m_hangingBaseline = hangingBaseline; }
 
     float alphabeticBaseline() const { return m_alphabeticBaseline; }
     void setAlphabeticBaseline(float alphabeticBaseline) { m_alphabeticBaseline = alphabeticBaseline; }
 
     float ideographicBaseline() const { return m_ideographicBaseline; }
     void setIdeographicBaseline(float ideographicBaseline) { m_ideographicBaseline = ideographicBaseline; }
 
-    void trace(Visitor*) { }
+    DEFINE_INLINE_TRACE() { }
 
 private:
     TextMetrics()
         : m_width(0)
         , m_actualBoundingBoxLeft(0)
         , m_actualBoundingBoxRight(0)
         , m_fontBoundingBoxAscent(0)
         , m_fontBoundingBoxDescent(0)
         , m_actualBoundingBoxAscent(0)
         , m_actualBoundingBoxDescent(0)
@@ skipping 16 matching lines @@
     float m_emHeightAscent;
     float m_emHeightDescent;
     float m_hangingBaseline;
     float m_alphabeticBaseline;
     float m_ideographicBaseline;
 };
 
 } // namespace blink
 
 #endif // TextMetrics_h