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

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

Index: chrome/browser/resources/settings/internet_page/network_proxy.js
diff --git a/chrome/browser/resources/settings/internet_page/network_proxy.js b/chrome/browser/resources/settings/internet_page/network_proxy.js
index c7c02e631d2d7d3c4cc6e3a11c09ce964faff4ad..a18f5df31c77404d4245311528cfe0635803ede4 100644
--- a/chrome/browser/resources/settings/internet_page/network_proxy.js
+++ b/chrome/browser/resources/settings/internet_page/network_proxy.js
@@ -9,6 +9,8 @@
 Polymer({
   is: 'network-proxy',
 
+  behaviors: [CrPolicyNetworkBehavior],
+
   properties: {
     /**
      * The network properties dictionary containing the proxy properties to
@@ -256,6 +258,21 @@ Polymer({
   },
 
   /**
+   * @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