MD-Settings: Add a11y label for network summary items.

chrome/browser/resources/settings/internet_page/network_summary_item.html

 <link rel="import" href="chrome://resources/cr_elements/cr_expand_button/cr_expand_button.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_network_list.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_network_list_item.html">
 <link rel="import" href="chrome://resources/html/action_link.html">
 <link rel="import" href="chrome://resources/html/action_link_css.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-a11y-keys-behavior/iron-a11y-keys-behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-collapse/iron-collapse.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
@@ skipping 38 matching lines @@
 
       #networkList {
         margin: 5px 0 10px;
         max-height: 200px;
         min-height: 50px;
       }
     </style>
     <div class="settings-box two-line" actionable on-tap="onDetailsTap_">
       <div id="details"
           no-flex$="[[showSimInfo_(deviceState)]]">
-        <cr-network-list-item item="[[activeNetworkState]]" class="flex">
+        <cr-network-list-item item="[[activeNetworkState]]" class="flex"
+            item-name="{{itemName}}">
         </cr-network-list-item>
         <paper-spinner active="[[scanningIsActive_(deviceState, expanded_)]]"
             hidden$="[[!scanningIsVisible_(deviceState)]]">
         </paper-spinner>
       </div>
 
       <template is="dom-if" if="[[showSimInfo_(deviceState)]]">
         <network-siminfo editable class="flex"
             network-properties="[[getCellularState_(deviceState)]]"
             networking-private="[[networkingPrivate]]">
@@ skipping 12 matching lines @@
                [[activeNetworkState.name]]? -->
           <button class="subpage-arrow" is="paper-icon-button-light"
               on-tap="onShowDetailsTap_">
           </button>
         </template>
       </div>
 
       <template is="dom-if" if="[[enableToggleIsVisible_(deviceState)]]">
         <div class="secondary-action">
           <paper-toggle-button  id="deviceEnabledButton"
+              aria-label$="[[itemName]]"
               checked="[[deviceIsEnabled_(deviceState)]]"
               enabled="[[enableToggleIsEnabled_(deviceState)]]"
               on-tap="onDeviceEnabledTap_">
           </paper-toggle-button>
         </div>
       </template>
 
     </div>
     <template is="dom-if"
         if="[[networksDomIfIsTrue_(expanded_, wasExpanded_)]]">
@@ skipping 11 matching lines @@
                 $i18n{knownNetworksButton}
               </a>
             </div>
           </template>
         </div>
       </iron-collapse>
     </template>
   </template>
   <script src="network_summary_item.js"></script>
 </dom-module>