Implement DOMPoint using v8 extras.

third_party/WebKit/Source/core/dom/DOMPointReadOnly.cpp

-// Copyright 2014 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.
-
-#include "core/dom/DOMPointReadOnly.h"
-
-namespace blink {
-
-DOMPointReadOnly* DOMPointReadOnly::create(double x, double y, double z, double w)
-{
-    return new DOMPointReadOnly(x, y, z, w);
-}
-
-DOMPointReadOnly::DOMPointReadOnly(double x, double y, double z, double w)
-    : m_x(x)
-    , m_y(y)
-    , m_z(z)
-    , m_w(w)
-{
-}
-
-} // namespace blink