Rework ash::CursorManager into a corewm object, to share code with desktop.

ash/wm/drag_window_resizer_unittest.cc

 // Copyright (c) 2012 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 "ash/wm/drag_window_resizer.h"
 
 #include "ash/display/mouse_cursor_event_filter.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/cursor_manager_test_api.h"
-#include "ash/wm/cursor_manager.h"
 #include "ash/wm/drag_window_controller.h"
 #include "ash/wm/shelf_layout_manager.h"
 #include "base/stringprintf.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/screen.h"
@@ skipping 452 matching lines @@
     ASSERT_TRUE(resizer.get());
     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
     EXPECT_TRUE(event_filter->WarpMouseCursorIfNecessary(root_windows[0],
                                                          gfx::Point(399, 200)));
     resizer->CompleteDrag(0);
   }
 }
 
 }  // namespace internal
 }  // namespace ash