Split infobar_delegate.[cc,h] into separate pieces for the different classes defined within, so that

chrome/browser/ui/cocoa/infobars/infobar_test_helper.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_TEST_HELPER_H_
 #define CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_TEST_HELPER_H_
 #pragma once
 
-#include "chrome/browser/tab_contents/infobar_delegate.h"
-
+#include "chrome/browser/tab_contents/confirm_infobar_delegate.h"
+#include "chrome/browser/tab_contents/link_infobar_delegate.h"
 
 // MockLinkInfoBarDelegate ----------------------------------------------------
 
 class MockLinkInfoBarDelegate : public LinkInfoBarDelegate {
  public:
   MockLinkInfoBarDelegate();
   virtual ~MockLinkInfoBarDelegate();
 
   void set_dont_close_on_action() { closes_on_action_ = false; }
 
@@ skipping 65 matching lines @@
   mutable bool link_text_accessed_;
   bool ok_clicked_;
   bool cancel_clicked_;
   bool link_clicked_;
   bool closed_;
 
   DISALLOW_COPY_AND_ASSIGN(MockConfirmInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_TEST_HELPER_H_