Change ui cursor identifiers to an enum class.

ui/base/cursor/ozone/cursor_data_factory_ozone.cc

 // Copyright 2017 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 "ui/base/cursor/ozone/cursor_data_factory_ozone.h"
 
 #include "ui/base/cursor/cursor.h"
 
 namespace ui {
 
@@ skipping 32 matching lines @@
 CursorDataFactoryOzone::CursorDataFactoryOzone() {}
 
 CursorDataFactoryOzone::~CursorDataFactoryOzone() {}
 
 // static
 const ui::CursorData& CursorDataFactoryOzone::GetCursorData(
     PlatformCursor platform_cursor) {
   return ToCursorDataOzone(platform_cursor)->data();
 }
 
-PlatformCursor CursorDataFactoryOzone::GetDefaultCursor(int type) {
+PlatformCursor CursorDataFactoryOzone::GetDefaultCursor(CursorType type) {
   // Unlike BitmapCursorFactoryOzone, we aren't making heavyweight bitmaps, but
   // we still have to cache these forever because objects that come out of the
   // GetDefaultCursor() method aren't treated as refcounted by the ozone
   // interfaces.
   return GetDefaultCursorInternal(type).get();
 }
 
 PlatformCursor CursorDataFactoryOzone::CreateImageCursor(
     const SkBitmap& bitmap,
     const gfx::Point& hotspot,
@@ skipping 18 matching lines @@
 
 void CursorDataFactoryOzone::RefImageCursor(PlatformCursor cursor) {
   ToCursorDataOzone(cursor)->AddRef();
 }
 
 void CursorDataFactoryOzone::UnrefImageCursor(PlatformCursor cursor) {
   ToCursorDataOzone(cursor)->Release();
 }
 
 scoped_refptr<CursorDataOzone> CursorDataFactoryOzone::GetDefaultCursorInternal(
-    int type) {
-  if (type == kCursorNone)
+    CursorType type) {
+  if (type == CursorType::kNone)
     return nullptr;  // nullptr is used for hidden cursor.
 
   if (!default_cursors_.count(type)) {
     // We hold a ref forever because clients do not do refcounting for default
     // cursors.
     scoped_refptr<CursorDataOzone> cursor =
         make_scoped_refptr(new CursorDataOzone(ui::CursorData(type)));
     default_cursors_[type] = std::move(cursor);
   }
 
   // Returned owned default cursor for this type.
   return default_cursors_[type];
 }
 
 }  // namespace ui