Add cr-policy-network-indicator and add to internet settings

chrome/browser/resources/settings/internet_page/network_proxy.js

 // Copyright 2015 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.
 
 /**
  * @fileoverview Polymer element for displaying and editing network proxy
  * values.
  */
 Polymer({
   is: 'network-proxy',
 
+  behaviors: [CrPolicyNetworkBehavior],
+
   properties: {
     /**
      * The network properties dictionary containing the proxy properties to
      * display and modify.
      * @type {!CrOnc.NetworkProperties|undefined}
      */
     networkProperties: {
       type: Object,
       observer: 'networkPropertiesChanged_'
     },
@@ skipping 227 matching lines @@
     if (proxyType == CrOnc.ProxySettingsType.MANUAL)
       return 'Manual proxy configuration';
     if (proxyType == CrOnc.ProxySettingsType.PAC)
       return 'Automatic proxy configuration';
     if (proxyType == CrOnc.ProxySettingsType.WPAD)
       return 'Web proxy autodiscovery';
     return 'Direct Internet connection';
   },
 
   /**
+   * @param {boolean} editable
+   * @param {!CrOnc.NetworkProperties} networkProperties
+   * @param {string} key
+   * @return {boolean} Whether the property is editable.
+   * @private
+   */
+  isPropertyEditable_: function(editable, networkProperties, key) {
+    if (!editable)
+      return false;
+    var property = /** @type {!CrOnc.NetworkProperty|undefined} */(
+      this.get(key, networkProperties));
+    return !this.isNetworkPolicyEnforced(property);
+  },
+
+  /**
    * @param {string} property The property to test
    * @param {string} value The value to test against
    * @return {boolean} True if property == value
    * @private
    */
   matches_: function(property, value) {
     return property == value;
   }
 });