MD Settings: Network: Provide default WiFi network

chrome/browser/resources/settings/internet_page/network_summary.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 a summary of network states
  * by type: Ethernet, WiFi, Cellular, WiMAX, and VPN.
  */
 
 /** @typedef {chrome.networkingPrivate.DeviceStateProperties} */
@@ skipping 37 matching lines @@
       notify: true,
     },
 
     /**
      * Interface for networkingPrivate calls, passed from internet_page.
      * @type {NetworkingPrivate}
      */
     networkingPrivate: Object,
 
     /**
-     * The device state for each network device type.
+     * The device state for each network device type. We initialize this to
+     * include a disabled WiFi type since WiFi is always present. This reduces
+     * the amount of visual change on first load.
      * @private {DeviceStateObject}
      */
     deviceStates: {
       type: Object,
       value: function() {
-        return {};
+        return {
+          WiFi: {
+            Type: chrome.networkingPrivate.NetworkType.WI_FI,
+            State: chrome.networkingPrivate.DeviceStateType.DISABLED
+          },
+        };
       },
       notify: true,
     },
 
     /**
-     * Array of active network states, one per device type.
+     * Array of active network states, one per device type. Initialized to
+     * include a default WiFi state (see deviceStates comment).
      * @private {!Array<!CrOnc.NetworkStateProperties>}
      */
     activeNetworkStates_: {
       type: Array,
       value: function() {
-        return [];
+        return [{GUID: '', Type: chrome.networkingPrivate.NetworkType.WI_FI}];
       },
     },
 
     /**
      * List of network state data for each network type.
      * @private {NetworkStateListObject}
      */
     networkStateLists_: {
       type: Object,
       value: function() {
-        return {};
+        return {WiFi: []};
       },
     },
   },
 
   /**
    * Listener function for chrome.networkingPrivate.onNetworkListChanged event.
    * @type {?function(!Array<string>)}
    * @private
    */
   networkListChangedListener_: null,
@@ skipping 231 matching lines @@
       newActiveNetworkStates.push(state);
       this.activeNetworkIds_.add(state.GUID);
     }
 
     this.deviceStates = newDeviceStates;
     this.networkStateLists_ = newNetworkStateLists;
     // Set activeNetworkStates last to rebuild the dom-repeat.
     this.activeNetworkStates_ = newActiveNetworkStates;
   },
 });