app_shell: Add support for mouse cursors.

ash/display/cursor_window_controller.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 ASH_DISPLAY_CURSOR_WINDOW_CONTROLLER_H_
 #define ASH_DISPLAY_CURSOR_WINDOW_CONTROLLER_H_
 
 #include "ui/aura/window.h"
 #include "ui/base/cursor/cursor.h"
 #include "ui/gfx/display.h"
 
 namespace ash {
-namespace test{
+namespace test {
 class MirrorWindowTestApi;
 }
 
 class CursorWindowDelegate;
 
 // Draws a mouse cursor on a given container window.
 // When cursor compositing is disabled, CursorWindowController is responsible
 // to scale and rotate the mouse cursor bitmap to match settings of the
 // primary display.
 // When cursor compositing is enabled, just draw the cursor as-is.
@@ skipping 54 matching lines @@
 
   scoped_ptr<aura::Window> cursor_window_;
   scoped_ptr<CursorWindowDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(CursorWindowController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_CURSOR_WINDOW_CONTROLLER_H_