Allow defining named grid lines on the grid element

Source/core/rendering/style/StyleGridData.h

 /*
  * Copyright (C) 2011 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:
  * 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 StyleGridData_h
 #define StyleGridData_h
 
 #include "core/rendering/style/GridTrackSize.h"
 #include "core/rendering/style/RenderStyleConstants.h"
 #include <wtf/PassRefPtr.h>
 #include <wtf/RefCounted.h>
 #include <wtf/Vector.h>
+#include <wtf/text/WTFString.h>
 
 namespace WebCore {
 
+typedef HashMap<String, Vector<size_t> > NamedGridLinesMap;
+
 class StyleGridData : public RefCounted<StyleGridData> {
 public:
     static PassRefPtr<StyleGridData> create() { return adoptRef(new StyleGridData); }
     PassRefPtr<StyleGridData> copy() const { return adoptRef(new StyleGridData(*this)); }
 
     bool operator==(const StyleGridData& o) const
     {
-        return m_gridColumns == o.m_gridColumns && m_gridRows == o.m_gridRows && m_gridAutoFlow == o.m_gridAutoFlow && m_gridAutoRows == o.m_gridAutoRows && m_gridAutoColumns == o.m_gridAutoColumns;
+        return m_gridColumns == o.m_gridColumns && m_gridRows == o.m_gridRows && m_gridAutoFlow == o.m_gridAutoFlow && m_gridAutoRows == o.m_gridAutoRows && m_gridAutoColumns == o.m_gridAutoColumns && m_namedGridColumnLines == o.m_namedGridColumnLines && m_namedGridRowLines == o.m_namedGridRowLines;
     }
 
     bool operator!=(const StyleGridData& o) const
     {
         return !(*this == o);
     }
 
     // FIXME: Update the naming of the following variables.
     Vector<GridTrackSize> m_gridColumns;
     Vector<GridTrackSize> m_gridRows;
 
+    NamedGridLinesMap m_namedGridColumnLines;
+    NamedGridLinesMap m_namedGridRowLines;
+
     GridAutoFlow m_gridAutoFlow;
 
     GridTrackSize m_gridAutoRows;
     GridTrackSize m_gridAutoColumns;
 
 private:
     StyleGridData();
     StyleGridData(const StyleGridData&);
 };
 
 } // namespace WebCore
 
 #endif // StyleGridData_h