PrintPreview:[MAC] Added "Open PDF In Preview" option to open the pdf in native preview app.

chrome/browser/resources/print_preview/preview_area.js

 // 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.
 
 cr.define('print_preview', function() {
   'strict';
 
   /**
    * Creates a PreviewArea object. It represents the area where the preview
    * document is displayed.
@@ skipping 177 matching lines @@
     showCustomMessage: function(message) {
       this.customMessageWithDots_.innerHTML = message +
           this.dancingDotsText.innerHTML;
       this.customMessageWithDots_.hidden = false;
       if (this.pdfPlugin_)
         this.pdfPlugin_.classList.add('invisible');
       this.overlayLayer.classList.remove('invisible');
     },
 
     /**
+     * Clears the custom message with dots animation.
+     */
+    clearCustomMessageWithDots: function() {
+      this.customMessageWithDots_.innerHTML = '';
+      this.customMessageWithDots_.hidden = true;
+    },
+
+    /**
      * Display an error message in the center of the preview area.
      * @param {string} errorMessage The error message to be displayed.
      */
     displayErrorMessageAndNotify: function(errorMessage) {
       this.overlayLayer.classList.remove('invisible');
       this.customMessage_.textContent = errorMessage;
       this.customMessage_.hidden = false;
       this.customMessageWithDots_.innerHTML = '';
       this.customMessageWithDots_.hidden = true;
       if (this.pdfPlugin_) {
@@ skipping 12 matching lines @@
      *     button is clicked.
      */
     displayErrorMessageWithButtonAndNotify: function(
         errorMessage, buttonText, buttonListener) {
       this.errorButton.disabled = false;
       this.errorButton.textContent = buttonText;
       this.errorButton.onclick = buttonListener;
       this.errorButton.hidden = false;
       $('system-dialog-throbber').hidden = true;
       $('native-print-dialog-throbber').hidden = true;
+      if (cr.isMac)
+        $('open-preview-app-throbber').hidden = true;
       this.displayErrorMessageAndNotify(errorMessage);
     }
   };
 
   return {
     PreviewArea: PreviewArea,
   };
 });