Cleanup RenderTreeAsText

Source/core/rendering/RenderTreeAsText.h

 /*
  * Copyright (C) 2003, 2006, 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 13 matching lines @@
  */
 
 #ifndef RenderTreeAsText_h
 #define RenderTreeAsText_h
 #include "platform/text/TextStream.h"
 
 #include "wtf/Forward.h"
 
 namespace blink {
 
+class Color;
 class Element;
 class LayoutRect;
 class LocalFrame;
 class Node;
 class RenderLayer;
 class RenderObject;
 class TextStream;
 
 enum RenderAsTextBehaviorFlags {
     RenderAsTextBehaviorNormal = 0,
@@ skipping 24 matching lines @@
 
 // Helper function shared with SVGRenderTreeAsText
 String quoteAndEscapeNonPrintables(const String&);
 
 String counterValueForElement(Element*);
 
 String markerTextForListItem(Element*);
 
 String nodePositionAsStringForTesting(Node*);
 
+TextStream& operator<<(TextStream&, const Color&);
+
 } // namespace blink
 
 #endif // RenderTreeAsText_h