[Mac] Organize all infobar files into chrome/browser/ui/cocoa/infobars/....

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

 // Copyright (c) 2009 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_INFOBAR_H_
-#define CHROME_BROWSER_UI_COCOA_INFOBAR_H_
+#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
 // class would be analogous to the various bridge classes we already
@@ skipping 21 matching lines @@
     return controller_;
   }
 
  private:
   // Pointer to the infobar controller.  Is never null.
   InfoBarController* controller_;  // weak
 
   DISALLOW_COPY_AND_ASSIGN(InfoBar);
 };
 
-#endif  // CHROME_BROWSER_UI_COCOA_INFOBAR_H_
+#endif  // CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_H_