Remove InfoBarDelegate::web_contents()

chrome/browser/ui/startup/obsolete_system_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/ui/startup/obsolete_system_infobar_delegate.h"
 
 #include "base/cpu.h"
 #include "chrome/browser/infobars/infobar.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/common/url_constants.h"
@@ skipping 63 matching lines @@
 int ObsoleteSystemInfoBarDelegate::GetButtons() const {
   return BUTTON_NONE;
 }
 
 base::string16 ObsoleteSystemInfoBarDelegate::GetLinkText() const {
   return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
 }
 
 bool ObsoleteSystemInfoBarDelegate::LinkClicked(
     WindowOpenDisposition disposition) {
-  web_contents()->OpenURL(content::OpenURLParams(
+  content::WebContents* web_contents =
+      InfoBarService::WebContentsFromInfoBar(infobar());
+  web_contents->OpenURL(content::OpenURLParams(
 #if defined(OS_MACOSX)
       GURL(chrome::kMac32BitDeprecationURL),
 #else
       GURL("http://www.google.com/support/chrome/bin/answer.py?answer=95411"),
 #endif
       content::Referrer(),
       (disposition == CURRENT_TAB) ? NEW_FOREGROUND_TAB : disposition,
       content::PAGE_TRANSITION_LINK, false));
   return false;
 }