Refactoring display configuration state to allow generic state objects

ui/display/chromeos/x11/display_mode_x11.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_DISPLAY_CHROMEOS_X11_DISPLAY_MODE_X11_H_
+#define UI_DISPLAY_CHROMEOS_X11_DISPLAY_MODE_X11_H_
+
+#include "ui/display/chromeos/display_mode.h"
+
+// Forward declare from Xlib and Xrandr.
+typedef unsigned long XID;
+typedef XID RRMode;
+
+namespace ui {
+
+class DISPLAY_EXPORT DisplayModeX11 : public DisplayMode {
+ public:
+  DisplayModeX11(const gfx::Size& size,
+                 bool interlaced,
+                 float refresh_rate,
+                 RRMode mode_id);
+  virtual ~DisplayModeX11();
+
+  RRMode mode_id() const { return mode_id_; }
+
+ private:
+  RRMode mode_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(DisplayModeX11);
+};
+
+}  // namespace ui
+
+#endif  // UI_DISPLAY_CHROMEOS_X11_DISPLAY_MODE_X11_H_