Convert WindowOpenDisposition to an enum class.

chrome/browser/renderer_context_menu/spelling_bubble_model.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 "chrome/browser/renderer_context_menu/spelling_bubble_model.h"
 
 #include "base/logging.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/chromium_strings.h"
@@ skipping 42 matching lines @@
 
 base::string16 SpellingBubbleModel::GetLinkText() const {
   return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
 }
 
 GURL SpellingBubbleModel::GetLinkURL() const {
   return GURL(chrome::kPrivacyLearnMoreURL);
 }
 
 void SpellingBubbleModel::LinkClicked() {
-  OpenURLParams params(GetLinkURL(), Referrer(), NEW_FOREGROUND_TAB,
+  OpenURLParams params(GetLinkURL(), Referrer(),
+                       WindowOpenDisposition::NEW_FOREGROUND_TAB,
                        ui::PAGE_TRANSITION_LINK, false);
   web_contents_->OpenURL(params);
 }
 
 void SpellingBubbleModel::SetPref(bool enabled) {
   PrefService* pref = profile_->GetPrefs();
   DCHECK(pref);
   pref->SetBoolean(spellcheck::prefs::kSpellCheckUseSpellingService, enabled);
 }