MD Settings: Fix networking config errors

chrome/browser/resources/settings/internet_page/internet_detail_page.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
  * 'settings-internet-detail' is the settings subpage containing details
  * for a network.
  */
 (function() {
@@ skipping 249 matching lines @@
           this.guid, this.getPropertiesCallback_.bind(this));
     }
   },
 
   /**
    * networkingPrivate.getProperties callback.
    * @param {CrOnc.NetworkProperties} properties The network properties.
    * @private
    */
   getPropertiesCallback_: function(properties) {
+    if (chrome.runtime.lastError) {
+      var message = chrome.runtime.lastError.message;
+      if (message == 'Error.InvalidNetworkGuid') {
+        console.error('Details page: GUID no longer exists: ' + this.guid);
+      } else {
+        console.error(
+            'Unexpected networkingPrivate.getManagedProperties error: ' +
+            message + ' For: ' + this.guid);
+      }
+      this.close_();
+      return;
+    }
+    if (!properties) {
+      console.error('No properties for: ' + this.guid);
+      this.close_();
+      return;
+    }
     this.networkProperties = properties;
-    if (!properties) {
-      // If |properties| is null, the network is no longer visible, close this.
-      console.error('Network no longer exists: ' + this.guid);
-      this.close_();
-    }
   },
 
   /**
    * networkingPrivate.getState callback.
    * @param {CrOnc.NetworkStateProperties} state The network state properties.
    * @private
    */
   getStateCallback_: function(state) {
     if (!state) {
       // If |state| is null, the network is no longer visible, close this.
@@ skipping 639 matching lines @@
    */
   allPropertiesMatch_: function(curValue, newValue) {
     for (var key in newValue) {
       if (newValue[key] != curValue[key])
         return false;
     }
     return true;
   }
 });
 })();