InlinedVisitor: Migrate css to use inlined tracing

Source/core/css/resolver/ViewportStyleResolver.cpp

 /*
  * Copyright (C) 2012-2013 Intel Corporation. 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.
@@ skipping 185 matching lines @@
         return Length(Auto);
 
     Length result = primitiveValue->convertToLength(CSSToLengthConversionData(documentStyle, fontSizes, viewportSize, 1.0f));
     if (documentStyle->hasViewportUnits())
         m_document->setHasViewportUnits();
     documentStyle->setHasViewportUnits(documentStyleHasViewportUnits);
 
     return result;
 }
 
-void ViewportStyleResolver::trace(Visitor* visitor)
+DEFINE_TRACE(ViewportStyleResolver)
 {
     visitor->trace(m_propertySet);
     visitor->trace(m_document);
 }
 
 } // namespace blink