Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/cocoa/profiles/profile_chooser_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/profile_chooser_controller.h"
 
 #import <Carbon/Carbon.h>  // kVK_Return.
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
@@ skipping 1081 matching lines @@
 }
 
 - (IBAction)editProfile:(id)sender {
   avatarMenu_->EditProfile(avatarMenu_->GetActiveProfileIndex());
   [self postActionPerformed:ProfileMetrics::PROFILE_DESKTOP_MENU_EDIT_IMAGE];
   [self postActionPerformed:ProfileMetrics::PROFILE_DESKTOP_MENU_EDIT_NAME];
 }
 
 - (IBAction)switchToProfile:(id)sender {
   // Check the event flags to see if a new window should be created.
-  bool alwaysCreate = ui::WindowOpenDispositionFromNSEvent(
-      [NSApp currentEvent]) == NEW_WINDOW;
+  bool alwaysCreate =
+      ui::WindowOpenDispositionFromNSEvent([NSApp currentEvent]) ==
+      WindowOpenDisposition::NEW_WINDOW;
   avatarMenu_->SwitchToProfile([sender tag], alwaysCreate,
                                ProfileMetrics::SWITCH_PROFILE_ICON);
 }
 
 - (IBAction)switchToGuest:(id)sender {
   PrefService* service = g_browser_process->local_state();
   DCHECK(service);
   DCHECK(service->GetBoolean(prefs::kBrowserGuestModeEnabled));
   profiles::SwitchToGuestProfile(ProfileManager::CreateCallback());
 }
@@ skipping 1820 matching lines @@
 }
 
 - (bool)shouldShowGoIncognito {
   bool incognitoAvailable =
       IncognitoModePrefs::GetAvailability(browser_->profile()->GetPrefs()) !=
           IncognitoModePrefs::DISABLED;
   return incognitoAvailable && !browser_->profile()->IsGuestSession();
 }
 
 @end