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

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

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// 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_H_
 #define CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_H_
 #pragma once
 
 #include "base/logging.h"  // for DCHECK
 
 @class InfoBarController;
 
 // A C++ wrapper around an Objective-C InfoBarController.  This class
 // exists solely to be the return value for InfoBarDelegate::CreateInfoBar(),
-// as defined in chrome/browser/tab_contents/infobar_delegate.h.  This
+// as defined in chrome/browser/tab_contents/confirm_infobar_delegate.h.  This
 // class would be analogous to the various bridge classes we already
 // have, but since there is no pre-defined InfoBar interface, it is
 // easier to simply throw away this object and deal with the
 // controller directly rather than pass messages through a bridge.
 //
 // Callers should delete the returned InfoBar immediately after
 // calling CreateInfoBar(), as the returned InfoBar* object is not
 // pointed to by anyone.  Expected usage:
 //
 // scoped_ptr<InfoBar> infobar(delegate->CreateInfoBar());
@@ skipping 13 matching lines @@
   }
 
  private:
   // Pointer to the infobar controller.  Is never null.
   InfoBarController* controller_;  // weak
 
   DISALLOW_COPY_AND_ASSIGN(InfoBar);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_H_