Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/webui/print_preview/print_preview_handler.cc

 // Copyright (c) 2012 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/webui/print_preview/print_preview_handler.h"
 
 #include <ctype.h>
 #include <stddef.h>
 
 #include <map>
@@ skipping 1120 matching lines @@
 
 void PrintPreviewHandler::HandleManageCloudPrint(
     const base::ListValue* args) {
   ++manage_cloud_printers_dialog_request_count_;
   GURL manage_url(cloud_devices::GetCloudPrintRelativeURL("manage.html"));
   std::string user;
   if (!args->GetString(0, &user))
     return;
   if (!user.empty())
     manage_url = net::AppendQueryParameter(manage_url, "user", user);
-  preview_web_contents()->OpenURL(content::OpenURLParams(
-      manage_url,
-      content::Referrer(),
-      NEW_FOREGROUND_TAB,
-      ui::PAGE_TRANSITION_LINK,
-      false));
+  preview_web_contents()->OpenURL(
+      content::OpenURLParams(manage_url, content::Referrer(),
+                             WindowOpenDisposition::NEW_FOREGROUND_TAB,
+                             ui::PAGE_TRANSITION_LINK, false));
 }
 
 #if defined(ENABLE_BASIC_PRINTING)
 void PrintPreviewHandler::HandleShowSystemDialog(
     const base::ListValue* /*args*/) {
   ReportStats();
   ReportUserActionHistogram(FALLBACK_TO_ADVANCED_SETTINGS_DIALOG);
 
   WebContents* initiator = GetInitiator();
   if (!initiator)
@@ skipping 601 matching lines @@
 
 void PrintPreviewHandler::UnregisterForGaiaCookieChanges() {
   if (gaia_cookie_manager_service_)
     gaia_cookie_manager_service_->RemoveObserver(this);
 }
 
 void PrintPreviewHandler::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   pdf_file_saved_closure_ = closure;
 }