Change ui cursor identifiers to an enum class.

services/ui/ws/test_utils.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/test_utils.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 512 matching lines @@
   return std::move(binding);
 }
 
 bool TestWindowServerDelegate::IsTestConfig() const {
   return true;
 }
 
 // WindowServerTestHelper  ---------------------------------------------------
 
 WindowServerTestHelper::WindowServerTestHelper()
-    : cursor_id_(mojom::CursorType::CURSOR_NULL),
+    : cursor_id_(mojom::CursorType::kNull),
       platform_display_factory_(&cursor_id_) {
   // Some tests create their own message loop, for example to add a task runner.
   if (!base::MessageLoop::current())
     message_loop_ = base::MakeUnique<base::MessageLoop>();
   PlatformDisplay::set_factory_for_testing(&platform_display_factory_);
   window_server_ = base::MakeUnique<WindowServer>(&window_server_delegate_);
   window_server_delegate_.set_window_server(window_server_.get());
 }
 
 WindowServerTestHelper::~WindowServerTestHelper() {
@@ skipping 146 matching lines @@
   if (!tree->AddWindow(parent_client_id, client_window_id))
     return nullptr;
   if (client_id)
     *client_id = client_window_id;
   return tree->GetWindowByClientId(client_window_id);
 }
 
 }  // namespace test
 }  // namespace ws
 }  // namespace ui