[CSS Grid Layout] Update named grid lines syntax to the last version of the specs

Source/core/css/CSSComputedStyleDeclaration.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 19 matching lines @@
 #include "StylePropertyShorthand.h"
 #include "bindings/v8/ExceptionState.h"
 #include "core/css/BasicShapeFunctions.h"
 #include "core/css/CSSArrayFunctionValue.h"
 #include "core/css/CSSAspectRatioValue.h"
 #include "core/css/CSSBorderImage.h"
 #include "core/css/CSSFilterValue.h"
 #include "core/css/CSSFontFeatureValue.h"
 #include "core/css/CSSFontValue.h"
 #include "core/css/CSSFunctionValue.h"
+#include "core/css/CSSGridLineNamesValue.h"
 #include "core/css/CSSGridTemplateValue.h"
 #include "core/css/CSSLineBoxContainValue.h"
 #include "core/css/CSSMixFunctionValue.h"
 #include "core/css/CSSParser.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSPrimitiveValueMappings.h"
 #include "core/css/CSSReflectValue.h"
 #include "core/css/CSSSelector.h"
 #include "core/css/CSSShadowValue.h"
 #include "core/css/CSSTimingFunctionValue.h"
@@ skipping 939 matching lines @@
         minMaxTrackBreadths->append(valueForGridTrackBreadth(trackSize.maxTrackBreadth(), style, renderView));
         return CSSFunctionValue::create("minmax(", minMaxTrackBreadths);
     }
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 static void addValuesForNamedGridLinesAtIndex(const OrderedNamedGridLines& orderedNamedGridLines, size_t i, CSSValueList& list)
 {
     const Vector<String>& namedGridLines = orderedNamedGridLines.get(i);
+    if (namedGridLines.isEmpty())
+        return;
+
+    RefPtr<CSSGridLineNamesValue> lineNames = CSSGridLineNamesValue::create();
     for (size_t j = 0; j < namedGridLines.size(); ++j)
-        list.append(cssValuePool().createValue(namedGridLines[j], CSSPrimitiveValue::CSS_STRING));
+        lineNames->append(cssValuePool().createValue(namedGridLines[j], CSSPrimitiveValue::CSS_STRING));
+    list.append(lineNames.release());
 }
 
 static PassRefPtr<CSSValue> valueForGridTrackList(GridTrackSizingDirection direction, RenderObject* renderer, const RenderStyle& style, RenderView* renderView)
 {
     const Vector<GridTrackSize>& trackSizes = direction == ForColumns ? style.gridDefinitionColumns() : style.gridDefinitionRows();
     const OrderedNamedGridLines& orderedNamedGridLines = direction == ForColumns ? style.orderedNamedGridColumnLines() : style.orderedNamedGridRowLines();
 
     // Handle the 'none' case here.
     if (!trackSizes.size()) {
         ASSERT(orderedNamedGridLines.isEmpty());
@@ skipping 2206 matching lines @@
     static const CSSPropertyID propertiesAfterSlashSeperator[3] = { CSSPropertyBackgroundSize, CSSPropertyBackgroundOrigin,
                                                                     CSSPropertyBackgroundClip };
 
     RefPtr<CSSValueList> list = CSSValueList::createSlashSeparated();
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesBeforeSlashSeperator, WTF_ARRAY_LENGTH(propertiesBeforeSlashSeperator))));
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesAfterSlashSeperator, WTF_ARRAY_LENGTH(propertiesAfterSlashSeperator))));
     return list.release();
 }
 
 } // namespace WebCore