Fix handling of 'inherit' and 'initial' for grid lines

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 1896 matching lines @@
         case CSSPropertyWebkitGridAutoFlow:
             return cssValuePool().createValue(style->gridAutoFlow());
         case CSSPropertyWebkitGridAutoRows:
             return valueForGridTrackSize(style->gridAutoRows(), style.get(), m_node->document()->renderView());
         case CSSPropertyWebkitGridColumns:
             return valueForGridTrackList(style->gridColumns(), style.get(), m_node->document()->renderView());
         case CSSPropertyWebkitGridRows:
             return valueForGridTrackList(style->gridRows(), style.get(), m_node->document()->renderView());
 
         case CSSPropertyWebkitGridStart:
-            return valueForGridPosition(style->gridItemStart());
+            return valueForGridPosition(style->gridStart());
         case CSSPropertyWebkitGridEnd:
-            return valueForGridPosition(style->gridItemEnd());
+            return valueForGridPosition(style->gridEnd());
         case CSSPropertyWebkitGridBefore:
-            return valueForGridPosition(style->gridItemBefore());
+            return valueForGridPosition(style->gridBefore());
         case CSSPropertyWebkitGridAfter:
-            return valueForGridPosition(style->gridItemAfter());
+            return valueForGridPosition(style->gridAfter());
         case CSSPropertyWebkitGridColumn:
             return getCSSPropertyValuesForGridShorthand(webkitGridColumnShorthand());
         case CSSPropertyWebkitGridRow:
             return getCSSPropertyValuesForGridShorthand(webkitGridRowShorthand());
 
         case CSSPropertyHeight:
             if (renderer) {
                 // According to http://www.w3.org/TR/CSS2/visudet.html#the-height-property,
                 // the "height" property does not apply for non-replaced inline elements.
                 if (!renderer->isReplaced() && renderer->isInline())
@@ skipping 1055 matching lines @@
     static const CSSPropertyID propertiesAfterSlashSeperator[3] = { CSSPropertyBackgroundSize, CSSPropertyBackgroundOrigin, 
                                                                     CSSPropertyBackgroundClip };
 
     RefPtr<CSSValueList> list = CSSValueList::createSlashSeparated();
     list->append(getCSSPropertyValuesForShorthandProperties(StylePropertyShorthand(propertiesBeforeSlashSeperator, WTF_ARRAY_LENGTH(propertiesBeforeSlashSeperator))));
     list->append(getCSSPropertyValuesForShorthandProperties(StylePropertyShorthand(propertiesAfterSlashSeperator, WTF_ARRAY_LENGTH(propertiesAfterSlashSeperator))));
     return list.release();
 }
 
 } // namespace WebCore