Move isEmptyValue and emptyValue to SVGCharacterData

third_party/WebKit/Source/core/layout/svg/SVGTextLayoutAttributesBuilder.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 129 matching lines @@
 }
 
 void SVGTextLayoutAttributesBuilder::buildCharacterDataMap(LayoutSVGText& textRoot)
 {
     // Fill character data map using text positioning elements in top-down order.
     for (const TextPosition& position : m_textPositions)
         fillCharacterDataMap(position);
 
     // Handle x/y default attributes.
     SVGCharacterData& data = m_characterDataMap.add(1, SVGCharacterData()).storedValue->value;
-    if (SVGTextLayoutAttributes::isEmptyValue(data.x))
+    if (!data.hasX())
         data.x = 0;
-    if (SVGTextLayoutAttributes::isEmptyValue(data.y))
+    if (!data.hasY())
         data.y = 0;
 }
 
 namespace {
 
 class AttributeListsIterator {
     STACK_ALLOCATED();
 public:
     AttributeListsIterator(SVGTextPositioningElement*);
 
@@ skipping 70 matching lines @@
         attrLists.updateCharacterData(i, data);
     }
 }
 
 DEFINE_TRACE(SVGTextLayoutAttributesBuilder::TextPosition)
 {
     visitor->trace(element);
 }
 
 } // namespace blink