[aura-mus] Add ui::CursorData, with mojo serialization.

services/ui/ws/drag_controller_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 "services/ui/ws/drag_controller.h"
 
 #include <map>
 #include <memory>
 #include <queue>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
-#include "services/ui/public/interfaces/cursor.mojom.h"
+#include "services/ui/public/interfaces/cursor/cursor.mojom.h"
 #include "services/ui/ws/drag_source.h"
 #include "services/ui/ws/drag_target_connection.h"
 #include "services/ui/ws/ids.h"
 #include "services/ui/ws/server_window.h"
 #include "services/ui/ws/test_server_window_delegate.h"
 #include "services/ui/ws/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/events/base_event_utils.h"
 
 namespace ui {
@@ skipping 656 matching lines @@
 
   // Window 2 responding negatively to its queued messages shouldn't change the
   // cursor.
   window2->Respond(false);
 
   EXPECT_EQ(ui::mojom::CursorType::COPY, cursor());
 }
 
 }  // namespace ws
 }  // namespace ui