Introduce InfoBarTabService API.

chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.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/custom_handlers/register_protocol_handler_infobar_delegate.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/common/url_constants.h"
@@ skipping 79 matching lines @@
 bool RegisterProtocolHandlerInfoBarDelegate::LinkClicked(
     WindowOpenDisposition disposition) {
   content::RecordAction(
       UserMetricsAction("RegisterProtocolHandler.InfoBar_LearnMore"));
   OpenURLParams params(
       GURL(chrome::kLearnMoreRegisterProtocolHandlerURL),
       Referrer(),
       (disposition == CURRENT_TAB) ? NEW_FOREGROUND_TAB : disposition,
       content::PAGE_TRANSITION_LINK,
       false);
-  owner()->web_contents()->OpenURL(params);
+  owner()->GetWebContents()->OpenURL(params);
   return false;
 }
 
 bool RegisterProtocolHandlerInfoBarDelegate::IsReplacedBy(
     RegisterProtocolHandlerInfoBarDelegate* delegate) {
   return handler_.IsEquivalent(delegate->handler_);
 }
 
 RegisterProtocolHandlerInfoBarDelegate*
     RegisterProtocolHandlerInfoBarDelegate::
         AsRegisterProtocolHandlerInfoBarDelegate() {
   return this;
 }