Implement DOMRect of geometry interfaces.

Source/core/dom/DOMRectReadOnly.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/DOMRectReadOnly.h"
+
+namespace WebCore {
+
+DOMRectReadOnly* DOMRectReadOnly::create(double x, double y, double width, double height)
+{
+    return new DOMRectReadOnly(x, y, width, height);
+}
+
+DOMRectReadOnly::DOMRectReadOnly(double x, double y, double width, double height)
+    : m_x(x)
+    , m_y(y)
+    , m_width(width)
+    , m_height(height)
+{
+}
+
+} // namespace WebCore