[Policy Experimental] Add policies to allow Cookies and Pop-ups exceptions.

chrome/browser/resources/options/content_settings.js

Index: chrome/browser/resources/options/content_settings.js
diff --git a/chrome/browser/resources/options/content_settings.js b/chrome/browser/resources/options/content_settings.js
index 33cac98257f4c9a08e87a3fa3c3db94a921c6203..2545f8366e1399d568cb04b6dd5203ecb92788e2 100644
--- a/chrome/browser/resources/options/content_settings.js
+++ b/chrome/browser/resources/options/content_settings.js
@@ -131,6 +131,18 @@ cr.define('options', function() {
   };
 
   /**
+   * Updates UI to enable/disable user preference exceptions for a particular
+   * content setting.
+   * @param {string} type The content settings type being updated.
+   * @param {boolean} maybeEnableEdit Whether user may view/edit exceptions.
+   */
+  ContentSettings.setAllowEnablePrefExceptions = function(type,
+                                                          maybeEnableEdit) {
+    // Update exceptions UI window.
+    this.getExceptionsList(type, 'normal').setAllowEnableEdit(maybeEnableEdit);
+  };
+
+  /**
    * Initializes an exceptions list.
    * @param {string} type The content type that we are setting exceptions for.
    * @param {Array<options.Exception>} exceptions An array of pairs, where the