[CSS Grid Layout] Implement 'justify-items' parsing

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 118 matching lines @@
     CSSPropertyFontFamily,
     CSSPropertyFontKerning,
     CSSPropertyFontSize,
     CSSPropertyFontStyle,
     CSSPropertyFontVariant,
     CSSPropertyFontVariantLigatures,
     CSSPropertyFontWeight,
     CSSPropertyHeight,
     CSSPropertyImageRendering,
     CSSPropertyIsolation,
+    CSSPropertyJustifyItems,
     CSSPropertyJustifySelf,
     CSSPropertyLeft,
     CSSPropertyLetterSpacing,
     CSSPropertyLineHeight,
     CSSPropertyListStyleImage,
     CSSPropertyListStylePosition,
     CSSPropertyListStyleType,
     CSSPropertyMarginBottom,
     CSSPropertyMarginLeft,
     CSSPropertyMarginRight,
@@ skipping 1871 matching lines @@
                 return cssValuePool().createIdentifierValue(CSSValueAuto);
             return cssValuePool().createValue(style->hyphenationString(), CSSPrimitiveValue::CSS_STRING);
         case CSSPropertyWebkitBorderFit:
             if (style->borderFit() == BorderFitBorder)
                 return cssValuePool().createIdentifierValue(CSSValueBorder);
             return cssValuePool().createIdentifierValue(CSSValueLines);
         case CSSPropertyImageRendering:
             return CSSPrimitiveValue::create(style->imageRendering());
         case CSSPropertyIsolation:
             return cssValuePool().createValue(style->isolation());
+        case CSSPropertyJustifyItems:
+            return valueForItemPositionWithOverflowAlignment(style->justifyItems(), style->justifyItemsOverflowAlignment());
         case CSSPropertyJustifySelf:
             return valueForItemPositionWithOverflowAlignment(style->justifySelf(), style->justifySelfOverflowAlignment());
         case CSSPropertyLeft:
             return valueForPositionOffset(*style, CSSPropertyLeft, renderer);
         case CSSPropertyLetterSpacing:
             if (!style->letterSpacing())
                 return cssValuePool().createIdentifierValue(CSSValueNormal);
             return zoomAdjustedPixelValue(style->letterSpacing(), *style);
         case CSSPropertyWebkitLineClamp:
             if (style->lineClamp().isNone())
@@ skipping 1017 matching lines @@
     return list.release();
 }
 
 void CSSComputedStyleDeclaration::trace(Visitor* visitor)
 {
     visitor->trace(m_node);
     CSSStyleDeclaration::trace(visitor);
 }
 
 } // namespace WebCore