Convert WindowOpenDisposition to an enum class.

chrome/browser/plugins/plugin_observer.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/plugins/plugin_observer.h"
 
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 423 matching lines @@
   if (it == plugin_placeholders_.end()) {
     NOTREACHED();
     return;
   }
   delete it->second;
   plugin_placeholders_.erase(it);
 }
 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)
 
 void PluginObserver::OnOpenAboutPlugins() {
-  web_contents()->OpenURL(OpenURLParams(
-      GURL(chrome::kChromeUIPluginsURL),
-      content::Referrer::SanitizeForRequest(
-          GURL(chrome::kChromeUIPluginsURL),
-          content::Referrer(web_contents()->GetURL(),
-                            blink::WebReferrerPolicyDefault)),
-      NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_AUTO_BOOKMARK, false));
+  web_contents()->OpenURL(
+      OpenURLParams(GURL(chrome::kChromeUIPluginsURL),
+                    content::Referrer::SanitizeForRequest(
+                        GURL(chrome::kChromeUIPluginsURL),
+                        content::Referrer(web_contents()->GetURL(),
+                                          blink::WebReferrerPolicyDefault)),
+                    WindowOpenDisposition::NEW_FOREGROUND_TAB,
+                    ui::PAGE_TRANSITION_AUTO_BOOKMARK, false));
 }
 
 void PluginObserver::OnCouldNotLoadPlugin(const base::FilePath& plugin_path) {
   g_browser_process->GetMetricsServicesManager()->OnPluginLoadingError(
       plugin_path);
   base::string16 plugin_name =
       PluginService::GetInstance()->GetPluginDisplayNameByPath(plugin_path);
   SimpleAlertInfoBarDelegate::Create(
       InfoBarService::FromWebContents(web_contents()),
       infobars::InfoBarDelegate::PLUGIN_OBSERVER,
       IDR_INFOBAR_PLUGIN_CRASHED,
 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
       gfx::VectorIconId::EXTENSION_CRASHED,
 #else
       gfx::VectorIconId::VECTOR_ICON_NONE,
 #endif
       l10n_util::GetStringFUTF16(IDS_PLUGIN_INITIALIZATION_ERROR_PROMPT,
                                  plugin_name),
       true);
 }