Move Infobars core files to the Infobars component

chrome/browser/ui/cocoa/infobars/extension_infobar_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/infobars/extension_infobar_controller.h"
 
 #include <cmath>
 
 #include "chrome/browser/extensions/extension_infobar_delegate.h"
 #include "chrome/browser/extensions/extension_view_host.h"
@@ skipping 242 matching lines @@
           extensionAction:NULL]);
   }
 
   [menu removeAllItems];
   [contextMenuController_ populateMenu:menu];
 }
 
 @end
 
 // static
-scoped_ptr<InfoBar> ExtensionInfoBarDelegate::CreateInfoBar(
+scoped_ptr<infobars::InfoBar> ExtensionInfoBarDelegate::CreateInfoBar(
     scoped_ptr<ExtensionInfoBarDelegate> delegate) {
   scoped_ptr<InfoBarCocoa> infobar(
-      new InfoBarCocoa(delegate.PassAs<InfoBarDelegate>()));
+      new InfoBarCocoa(delegate.PassAs<infobars::InfoBarDelegate>()));
   base::scoped_nsobject<ExtensionInfoBarController> controller(
       [[ExtensionInfoBarController alloc] initWithInfoBar:infobar.get()]);
   infobar->set_controller(controller);
-  return infobar.PassAs<InfoBar>();
+  return infobar.PassAs<infobars::InfoBar>();
 }