Remove PDF extension dependencies from grd files

chrome/browser/resources/print_preview/previewarea/preview_area.js

 // 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.
 
 cr.define('print_preview', function() {
   'use strict';
 
-<include src="../../pdf/pdf_scripting_api.js" />
-
   /**
    * Creates a PreviewArea object. It represents the area where the preview
    * document is displayed.
    * @param {!print_preview.DestinationStore} destinationStore Used to get the
    *     currently selected destination.
    * @param {!print_preview.PrintTicketStore} printTicketStore Used to get
    *     information about how the preview should be displayed.
    * @param {!print_preview.NativeLayer} nativeLayer Needed to communicate with
    *     Chromium's preview generation system.
    * @param {!print_preview.DocumentInfo} documentInfo Document data model.
@@ skipping 723 matching lines @@
             new print_preview.Size(viewportWidth, viewportHeight));
       }
     }
   };
 
   // Export
   return {
     PreviewArea: PreviewArea
   };
 });