[CSS Grid Layout] Update named grid lines syntax to the last version of the specs

Source/core/css/CSSGridLineNamesValue.h

Index: Source/core/css/CSSGridLineNamesValue.h
diff --git a/Source/core/css/CSSGridLineNamesValue.h b/Source/core/css/CSSGridLineNamesValue.h
new file mode 100644
index 0000000000000000000000000000000000000000..da97e059579a47903e7b142c9fb3fbcdef068bd4
--- /dev/null
+++ b/Source/core/css/CSSGridLineNamesValue.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013 Igalia, S.L. 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 CSSGridLineNamesValue_h
+#define CSSGridLineNamesValue_h
+
+#include "core/css/CSSValueList.h"
+#include "wtf/PassRefPtr.h"
+
+namespace WebCore {
+
+class CSSGridLineNamesValue : public CSSValueList {
+public:
+    static PassRefPtr<CSSGridLineNamesValue> create()
+    {
+        return adoptRef(new CSSGridLineNamesValue());
+    }
+
+    String customCSSText() const;
+
+    PassRefPtr<CSSGridLineNamesValue> cloneForCSSOM() const;
+
+private:
+    CSSGridLineNamesValue();
+};
+
+DEFINE_CSS_VALUE_TYPE_CASTS(CSSGridLineNamesValue, isGridLineNamesValue());
+}
+
+
+#endif