[CSS Grid Layout] Add support to place items using named grid lines

Source/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
@@ skipping 305 matching lines @@
 
 void StyleBuilderFunctions::applyValueCSSPropertyGridTemplateAreas(StyleResolverState& state, CSSValue* value)
 {
     if (value->isPrimitiveValue()) {
         // FIXME: Shouldn't we clear the grid-area values
         ASSERT(toCSSPrimitiveValue(value)->getValueID() == CSSValueNone);
         return;
     }
 
     CSSGridTemplateAreasValue* gridTemplateAreasValue = toCSSGridTemplateAreasValue(value);
-    state.style()->setNamedGridArea(gridTemplateAreasValue->gridAreaMap());
+    const NamedGridAreaMap& newNamedGridAreas = gridTemplateAreasValue->gridAreaMap();
+
+    NamedGridLinesMap namedGridColumnLines = state.style()->namedGridColumnLines();
+    NamedGridLinesMap namedGridRowLines = state.style()->namedGridRowLines();
+    StyleBuilderConverter::createImplicitNamedGridLinesFromGridArea(newNamedGridAreas, namedGridColumnLines, ForColumns);
+    StyleBuilderConverter::createImplicitNamedGridLinesFromGridArea(newNamedGridAreas, namedGridRowLines, ForRows);
+    state.style()->setNamedGridColumnLines(namedGridColumnLines);
+    state.style()->setNamedGridRowLines(namedGridRowLines);
+
+    state.style()->setNamedGridArea(newNamedGridAreas);
     state.style()->setNamedGridAreaRowCount(gridTemplateAreasValue->rowCount());
     state.style()->setNamedGridAreaColumnCount(gridTemplateAreasValue->columnCount());
 }
 
 void StyleBuilderFunctions::applyValueCSSPropertyLineHeight(StyleResolverState& state, CSSValue* value)
 {
     if (!value->isPrimitiveValue())
         return;
 
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
@@ skipping 1559 matching lines @@
         break;
     }
     case CSSPropertyEnableBackground:
         // Silently ignoring this property for now
         // http://bugs.webkit.org/show_bug.cgi?id=6022
         break;
     }
 }
 
 } // namespace WebCore