Creates GCP promo for ChromeOS users with no cloud printers.

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';
 
   /**
    * Creates a PreviewArea object. It represents the area where the preview
    * document is displayed.
@@ skipping 132 matching lines @@
    * @private
    */
   PreviewArea.Classes_ = {
     COMPATIBILITY_OBJECT: 'preview-area-compatibility-object',
     CUSTOM_MESSAGE_TEXT: 'preview-area-custom-message-text',
     MESSAGE: 'preview-area-message',
     INVISIBLE: 'invisible',
     OPEN_SYSTEM_DIALOG_BUTTON: 'preview-area-open-system-dialog-button',
     OPEN_SYSTEM_DIALOG_BUTTON_THROBBER:
         'preview-area-open-system-dialog-button-throbber',
-    OVERLAY: 'preview-area-overlay-layer',
-    PDF_PLUGIN: 'preview-area-pdf-plugin'
+    OVERLAY: 'preview-area-overlay-layer'
   };
 
   /**
    * Enumeration of IDs shown in the preview area.
    * @enum {string}
    * @private
    */
   PreviewArea.MessageId_ = {
     CUSTOM: 'custom',
     LOADING: 'loading',
@@ skipping 246 matching lines @@
       this.plugin_ = document.createElement('embed');
       // NOTE: The plugin's 'id' field must be set to 'pdf-viewer' since
       // chrome/renderer/print_web_view_helper.cc actually references it.
       this.plugin_.setAttribute('id', 'pdf-viewer');
       this.plugin_.setAttribute('class', 'preview-area-plugin');
       this.plugin_.setAttribute(
           'type', 'application/x-google-chrome-print-preview-pdf');
       this.plugin_.setAttribute('src', srcUrl);
       this.plugin_.setAttribute('aria-live', 'polite');
       this.plugin_.setAttribute('aria-atomic', 'true');
-      this.getElement().appendChild(this.plugin_);
+      this.getChildElement('.preview-area-plugin-wrapper').
+          appendChild(this.plugin_);
 
       global['onPreviewPluginLoad'] = this.onPluginLoad_.bind(this);
       this.plugin_.onload('onPreviewPluginLoad()');
 
       global['onPreviewPluginVisualStateChange'] =
           this.onPreviewVisualStateChange_.bind(this);
       this.plugin_.onScroll('onPreviewPluginVisualStateChange()');
       this.plugin_.onPluginSizeChanged('onPreviewPluginVisualStateChange()');
 
       this.plugin_.removePrintButton();
@@ skipping 155 matching lines @@
               pluginWidth - this.plugin_.getVerticalScrollbarThickness(),
               pluginHeight - this.plugin_.getHorizontalScrollbarThickness()));
     }
   };
 
   // Export
   return {
     PreviewArea: PreviewArea
   };
 });