Convert WindowOpenDisposition to an enum class.

chrome/browser/extensions/api/runtime/chrome_runtime_api_delegate.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/extensions/api/runtime/chrome_runtime_api_delegate.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 244 matching lines @@
 }
 
 void ChromeRuntimeAPIDelegate::OpenURL(const GURL& uninstall_url) {
   Profile* profile = Profile::FromBrowserContext(browser_context_);
   Browser* browser = chrome::FindLastActiveWithProfile(profile);
   if (!browser)
     browser = new Browser(Browser::CreateParams(profile));
 
   chrome::NavigateParams params(
       browser, uninstall_url, ui::PAGE_TRANSITION_CLIENT_REDIRECT);
-  params.disposition = NEW_FOREGROUND_TAB;
+  params.disposition = WindowOpenDisposition::NEW_FOREGROUND_TAB;
   params.user_gesture = false;
   chrome::Navigate(&params);
 }
 
 bool ChromeRuntimeAPIDelegate::GetPlatformInfo(PlatformInfo* info) {
   const char* os = update_client::UpdateQueryParams::GetOS();
   if (strcmp(os, "mac") == 0) {
     info->os = extensions::api::runtime::PLATFORM_OS_MAC;
   } else if (strcmp(os, "win") == 0) {
     info->os = extensions::api::runtime::PLATFORM_OS_WIN;
@@ skipping 111 matching lines @@
     const UpdateCheckResult& result) {
   auto it = update_check_info_.find(extension_id);
   if (it == update_check_info_.end())
     return;
   std::vector<UpdateCheckCallback> callbacks;
   it->second.callbacks.swap(callbacks);
   for (const auto& callback : callbacks) {
     callback.Run(result);
   }
 }