Fix cursor getting invisible after moving a window.

ash/test/cursor_manager_test_api.h

+// 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.
+
+#ifndef ASH_TEST_CURSOR_MANAGER_TEST_API_H_
+#define ASH_TEST_CURSOR_MANAGER_TEST_API_H_
+
+#include "base/basictypes.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace ash {
+
+class CursorManager;
+
+namespace test {
+
+// Use the api in this class to test CursorManager.
+class CursorManagerTestApi {
+ public:
+  explicit CursorManagerTestApi(CursorManager* cursor_manager);
+  ~CursorManagerTestApi();
+
+  gfx::NativeCursor GetCurrentCursor();
+  float GetDeviceScaleFactor();
+
+ private:
+  CursorManager* cursor_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(CursorManagerTestApi);
+};
+
+}  // namespace test
+}  // namespace ash
+
+#endif  // ASH_TEST_CURSOR_MANAGER_TEST_API_H_