[CSS Grid Layout] Redefining grids inside media queries does not work

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 246 matching lines @@
 {
     if (value->isPrimitiveValue()) {
         // FIXME: Shouldn't we clear the grid-area values
         ASSERT(toCSSPrimitiveValue(value)->getValueID() == CSSValueNone);
         return;
     }
 
     CSSGridTemplateAreasValue* gridTemplateAreasValue = toCSSGridTemplateAreasValue(value);
     const NamedGridAreaMap& newNamedGridAreas = gridTemplateAreasValue->gridAreaMap();
 
-    NamedGridLinesMap namedGridColumnLines = state.style()->namedGridColumnLines();
-    NamedGridLinesMap namedGridRowLines = state.style()->namedGridRowLines();
+    NamedGridLinesMap namedGridColumnLines;
+    NamedGridLinesMap namedGridRowLines;
+    StyleBuilderConverter::convertOrderedNamedGridLinesMapToNamedGridLinesMap(state.style()->orderedNamedGridColumnLines(), namedGridColumnLines);
+    StyleBuilderConverter::convertOrderedNamedGridLinesMapToNamedGridLinesMap(state.style()->orderedNamedGridRowLines(), 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());
 }
 
@@ skipping 660 matching lines @@
         return;
     case CSSValueSuper:
         svgStyle.setBaselineShift(BS_SUPER);
         return;
     default:
         ASSERT_NOT_REACHED();
     }
 }
 
 } // namespace blink