Implement DOMPoint of geometry interfaces.

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 "config.h"
+#include "core/dom/DOMPointReadOnly.h"
+
+namespace WebCore {
+
+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 WebCore