Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/sync/one_click_signin_links_delegate_impl.cc

 // Copyright 2013 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 "chrome/browser/ui/sync/one_click_signin_links_delegate_impl.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/browser_navigator_params.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/common/url_constants.h"
 
 OneClickSigninLinksDelegateImpl::OneClickSigninLinksDelegateImpl(
     Browser* browser)
     : browser_(browser) {}
 
 OneClickSigninLinksDelegateImpl::~OneClickSigninLinksDelegateImpl() {}
 
 void OneClickSigninLinksDelegateImpl::OnLearnMoreLinkClicked(bool is_dialog) {
   chrome::NavigateParams params(browser_, GURL(chrome::kChromeSyncLearnMoreURL),
                                 ui::PAGE_TRANSITION_LINK);
-  params.disposition = is_dialog ? NEW_WINDOW : NEW_FOREGROUND_TAB;
+  params.disposition = is_dialog ? WindowOpenDisposition::NEW_WINDOW
+                                 : WindowOpenDisposition::NEW_FOREGROUND_TAB;
   chrome::Navigate(&params);
 }
 
 void OneClickSigninLinksDelegateImpl::OnAdvancedLinkClicked() {
   chrome::ShowSettingsSubPage(browser_, chrome::kSyncSetupSubPage);
 }