Implement 'grid-template' parsing

Source/core/css/CSSComputedStyleDeclaration.cpp

Index: Source/core/css/CSSComputedStyleDeclaration.cpp
diff --git a/Source/core/css/CSSComputedStyleDeclaration.cpp b/Source/core/css/CSSComputedStyleDeclaration.cpp
index 32e1fa32e74331c3ee25009be5782afb06a8a1ff..eb84f8dc6cbba8187fcad41419b0399bb52d5c1e 100644
--- a/Source/core/css/CSSComputedStyleDeclaration.cpp
+++ b/Source/core/css/CSSComputedStyleDeclaration.cpp
@@ -32,6 +32,7 @@
 #include "core/css/CSSBorderImage.h"
 #include "core/css/CSSFilterValue.h"
 #include "core/css/CSSFunctionValue.h"
+#include "core/css/CSSGridTemplateValue.h"
 #include "core/css/CSSLineBoxContainValue.h"
 #include "core/css/CSSMixFunctionValue.h"
 #include "core/css/CSSParser.h"
@@ -1964,6 +1965,14 @@ PassRefPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValue(CSSPropert
         case CSSPropertyGridArea:
             return getCSSPropertyValuesForGridShorthand(gridAreaShorthand());
 
+        case CSSPropertyGridTemplate:
+            if (!style->namedGridAreaRowCount()) {
+                ASSERT(!style->namedGridAreaColumnCount());
+                return cssValuePool().createIdentifierValue(CSSValueNone);
+            }
+
+            return CSSGridTemplateValue::create(style->namedGridArea(), style->namedGridAreaRowCount(), style->namedGridAreaColumnCount());
+
         case CSSPropertyHeight:
             if (renderer) {
                 // According to http://www.w3.org/TR/CSS2/visudet.html#the-height-property,