Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/cocoa/profiles/avatar_menu_bubble_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/profiles/avatar_menu_bubble_controller.h"
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/sdk_forward_declarations.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 73 matching lines @@
   }
   return self;
 }
 
 - (IBAction)newProfile:(id)sender {
   menu_->AddNewProfile(ProfileMetrics::ADD_NEW_USER_ICON);
 }
 
 - (IBAction)switchToProfile:(id)sender {
   // Check the event flags to see if a new window should be crated.
-  bool always_create = ui::WindowOpenDispositionFromNSEvent(
-      [NSApp currentEvent]) == NEW_WINDOW;
+  bool always_create =
+      ui::WindowOpenDispositionFromNSEvent([NSApp currentEvent]) ==
+      WindowOpenDisposition::NEW_WINDOW;
   menu_->SwitchToProfile([sender menuIndex], always_create,
                          ProfileMetrics::SWITCH_PROFILE_ICON);
 }
 
 - (IBAction)editProfile:(id)sender {
   menu_->EditProfile([sender menuIndex]);
 }
 
 - (IBAction)switchProfile:(id)sender {
   expanded_ = YES;
@@ skipping 606 matching lines @@
 - (BOOL)accessibilityIsIgnored {
   return YES;
 }
 @end
 
 @implementation AccessibilityIgnoredTextFieldCell
 - (BOOL)accessibilityIsIgnored {
   return YES;
 }
 @end