mustash: Use ui::chromeos::EventRewriter in mus

services/ui/ws/cursor_unittest.cc

 // Copyright 2016 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 <stdint.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 77 matching lines @@
     return w;
   }
 
   void MoveCursorTo(const gfx::Point& p) {
     DisplayManager* display_manager = window_server()->display_manager();
     ASSERT_EQ(1u, display_manager->displays().size());
     Display* display = *display_manager->displays().begin();
     WindowManagerDisplayRoot* active_display_root =
         display->GetActiveWindowManagerDisplayRoot();
     ASSERT_TRUE(active_display_root);
-    static_cast<PlatformDisplayDelegate*>(display)->OnEvent(PointerEvent(
+
+    DisplayTestApi display_test_api(display);
+    display_test_api.OnEvent(PointerEvent(
         MouseEvent(ET_MOUSE_MOVED, p, p, base::TimeTicks(), 0, 0)));
     WindowManagerState* wms = active_display_root->window_manager_state();
     wms->OnEventAck(wms->window_tree(), mojom::EventResult::HANDLED);
   }
 
  private:
   WindowServerTestHelper ws_test_helper_;
   TestScreenManager screen_manager_;
   DISALLOW_COPY_AND_ASSIGN(CursorTest);
 };
@@ skipping 73 matching lines @@
   MoveCursorTo(gfx::Point(15, 15));
   EXPECT_EQ(mojom::Cursor::EAST_RESIZE, cursor());
 
   win->SetBounds(gfx::Rect(0, 0, 30, 30));
   EXPECT_EQ(mojom::Cursor::COPY, cursor());
 }
 
 }  // namespace test
 }  // namespace ws
 }  // namespace ui