ozone: Add OzoneWindowFactory & OzoneWindow

ui/ozone/window/window_factory_ozone.h

+// 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.
+
+#ifndef UI_OZONE_WINDOW_WINDOW_FACTORY_OZONE_H_
+#define UI_OZONE_WINDOW_WINDOW_FACTORY_OZONE_H_
+
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "ui/ozone/ozone_export.h"
+
+namespace gfx {
+class Rect;
+}
+
+namespace ui {
+
+class OzoneWindow;
+
+// Platform interface for creating OzoneWindows.
+class OZONE_EXPORT WindowFactoryOzone {
+ public:
+  WindowFactoryOzone();
+  virtual ~WindowFactoryOzone();
+
+  // Returns the instance
+  static WindowFactoryOzone* GetInstance();
+
+  // Sets the implementation delegate. Ownership is retained by the caller.
+  static void SetInstance(WindowFactoryOzone* impl);
+
+  // Create an ozone window.
+  virtual scoped_ptr<OzoneWindow> CreateWindow(const gfx::Rect& bounds);
+
+ private:
+  static WindowFactoryOzone* impl_;  // not owned
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_WINDOW_WINDOW_FACTORY_OZONE_H_