Change ui cursor identifiers to an enum class.

ui/views/native_cursor_aura.cc

 // Copyright 2014 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/views/native_cursor.h"
 
 #include "ui/base/cursor/cursor.h"
 
 namespace views {
 
 gfx::NativeCursor GetNativeIBeamCursor() {
-  return ui::kCursorIBeam;
+  return ui::CursorType::kIBeam;
 }
 
 gfx::NativeCursor GetNativeHandCursor() {
-  return ui::kCursorHand;
+  return ui::CursorType::kHand;
 }
 
 gfx::NativeCursor GetNativeColumnResizeCursor() {
-  return ui::kCursorColumnResize;
+  return ui::CursorType::kColumnResize;
 }
 
 gfx::NativeCursor GetNativeEastWestResizeCursor() {
-  return ui::kCursorEastWestResize;
+  return ui::CursorType::kEastWestResize;
 }
 
 gfx::NativeCursor GetNativeNorthSouthResizeCursor() {
-  return ui::kCursorNorthSouthResize;
+  return ui::CursorType::kNorthSouthResize;
 }
 
 }  // namespace views