Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.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/chromeos/keyboard_overlay_ui.h"
 
 #include <stddef.h>
 
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
@@ skipping 389 matching lines @@
        i != modifier_map.end(); ++i) {
     dict.SetString(ModifierKeyToLabel(i->first), ModifierKeyToLabel(i->second));
   }
 
   web_ui()->CallJavascriptFunctionUnsafe("initIdentifierMap", dict);
 }
 
 void KeyboardOverlayHandler::OpenLearnMorePage(const base::ListValue* args) {
   web_ui()->GetWebContents()->GetDelegate()->OpenURLFromTab(
       web_ui()->GetWebContents(),
-      content::OpenURLParams(GURL(kLearnMoreURL),
-                             content::Referrer(),
-                             NEW_FOREGROUND_TAB,
-                             ui::PAGE_TRANSITION_LINK,
-                             false));
+      content::OpenURLParams(GURL(kLearnMoreURL), content::Referrer(),
+                             WindowOpenDisposition::NEW_FOREGROUND_TAB,
+                             ui::PAGE_TRANSITION_LINK, false));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // KeyboardOverlayUI
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 KeyboardOverlayUI::KeyboardOverlayUI(content::WebUI* web_ui)
     : WebDialogUI(web_ui) {
   Profile* profile = Profile::FromWebUI(web_ui);
   KeyboardOverlayHandler* handler = new KeyboardOverlayHandler(profile);
   web_ui->AddMessageHandler(handler);
 
   // Set up the chrome://keyboardoverlay/ source.
   content::WebUIDataSource::Add(profile,
                                 CreateKeyboardOverlayUIHTMLSource(profile));
 }