Implement 'grid-template' parsing

Source/core/css/CSSGridTemplateValue.h

Index: Source/core/css/CSSGridTemplateValue.h
diff --git a/Source/core/css/CSSGridTemplateValue.h b/Source/core/css/CSSGridTemplateValue.h
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+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CSSGridTemplateValue_h
+#define CSSGridTemplateValue_h
+
+#include "core/css/CSSValue.h"
+#include "core/rendering/style/GridCoordinate.h"
+#include "wtf/text/StringHash.h"
+
+namespace WebCore {
+
+class CSSGridTemplateValue : public CSSValue {
+public:
+    static PassRefPtr<CSSGridTemplateValue> create(const NamedGridAreaMap& gridAreaMap, size_t rowCount, size_t columnCount) { return adoptRef(new CSSGridTemplateValue(gridAreaMap, rowCount, columnCount)); }
+    ~CSSGridTemplateValue() { }
+
+    String customCssText() const;
+
+    const NamedGridAreaMap& gridAreaMap() const { return m_gridAreaMap; }
+    size_t rowCount() const { return m_rowCount; }
+    size_t columnCount() const { return m_columnCount; }
+
+private:
+    CSSGridTemplateValue(const NamedGridAreaMap&, size_t rowCount, size_t columnCount);
+
+    NamedGridAreaMap m_gridAreaMap;
+    size_t m_rowCount;
+    size_t m_columnCount;
+};
+
+inline CSSGridTemplateValue* toCSSGridTemplateValue(CSSValue* value)
+{
+    ASSERT_WITH_SECURITY_IMPLICATION(value->isGridTemplateValue());
+    return static_cast<CSSGridTemplateValue*>(value);
+}
+
+inline const CSSGridTemplateValue* toCSSGridTemplateValue(const CSSValue* value)
+{
+    ASSERT_WITH_SECURITY_IMPLICATION(value->isGridTemplateValue());
+    return static_cast<const CSSGridTemplateValue*>(value);
+}
+
+// Catch unneeded cast.
+void toCSSGridTemplateValue(const CSSGridTemplateValue*);
+
+} // namespace WebCore
+
+#endif // CSSGridTemplateValue_h