Always trust internal PDF viewer.

chrome/browser/resources/plugins.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.
 
 /**
  * Takes the |pluginsData| input argument which represents data about the
  * currently installed/running plugins and populates the html jstemplate with
  * that data.
  * @param {Object} pluginsData Detailed info about installed plugins. Same
  *     expected format as returnPluginsData().
@@ skipping 229 matching lines @@
 /**
  * @param {Object} plugin An object containing the information about a plugin.
  *     See returnPluginsData() for the format of this object.
  * @return {boolean} Whether the plugin is enabled.
  */
 function isPluginEnabled(plugin) {
   return plugin.enabled_mode == 'enabledByUser' ||
          plugin.enabled_mode == 'enabledByPolicy';
 }
 
+/**
+ * @param {Object} plugin An object containing the information about a plugin.
+ *     See returnPluginsData() for the format of this object.
+ * @return {boolean} Whether the plugin is fully trusted.
+ */
+function isPluginTrusted(plugin) {
+    return plugin.trusted == true;
+}
+
 // Unfortunately, we don't have notifications for plugin (list) status changes
 // (yet), so in the meanwhile just update regularly.
 setInterval(function() {
   whenBrowserProxyReady.then(function(browserProxy) {
     return browserProxy.getPluginsData();
   }).then(returnPluginsData);
 }, 30000);
 
 // Add handlers to static HTML elements.
 $('collapse').onclick = toggleTmiMode;
@@ skipping 56 matching lines @@
   whenBrowserProxyReady
 ]).then(function(results) {
   var browserProxy = results[1];
   browserProxy.getShowDetails().then(function(response) {
     // Set the |tmiModeExpanded| first otherwise the UI flickers when
     // returnPlignsData executes.
     loadShowDetailsFromPrefs(response.show_details);
     return browserProxy.getPluginsData();
   }).then(returnPluginsData);
 });