Implement DOMPoint using v8 extras.

third_party/WebKit/Source/bindings/core/v8/GeometryInterfaces.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef GeometryInterfaces_h
+#define GeometryInterfaces_h
+
+#include "bindings/core/v8/ScriptValue.h"
+#include <v8.h>
+
+namespace blink {
+
+class ExceptionState;
+class ScriptState;
+
+class CORE_EXPORT GeometryInterfaces {
+    STATIC_ONLY(GeometryInterfaces);
+public:
+    static ScriptValue createDOMPoint(ScriptState*, double x = 0, double y = 0, double z = 0, double w = 1);
+};
+
+} // namespace blink
+
+#endif // GeometryInterfaces_h