Revert 238283 "Infobar system refactor."

trunk/src/chrome/browser/ui/cocoa/infobars/mock_confirm_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/cocoa/infobars/mock_confirm_infobar_delegate.h"
 
 #include "base/strings/utf_string_conversions.h"
 
 const char MockConfirmInfoBarDelegate::kMessage[] = "MockConfirmInfoBarMessage";
 
 MockConfirmInfoBarDelegate::MockConfirmInfoBarDelegate(Owner* owner)
-    : ConfirmInfoBarDelegate(),
+    : ConfirmInfoBarDelegate(NULL),
       owner_(owner),
       closes_on_action_(true),
       icon_accessed_(false),
       message_text_accessed_(false),
       link_text_accessed_(false),
       ok_clicked_(false),
       cancel_clicked_(false),
       link_clicked_(false) {
 }
 
@@ skipping 30 matching lines @@
 string16 MockConfirmInfoBarDelegate::GetLinkText() const {
   link_text_accessed_ = true;
   return string16();
 }
 
 bool MockConfirmInfoBarDelegate::LinkClicked(
     WindowOpenDisposition disposition) {
   link_clicked_ = true;
   return closes_on_action_;
 }