MD Settings: Network a11y fixes

chrome/browser/resources/settings/device_page/device_page.html

 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
 <link rel="import" href="device_page_browser_proxy.html">
 <link rel="import" href="display.html">
 <link rel="import" href="keyboard.html">
 <link rel="import" href="pointers.html">
 <link rel="import" href="power.html">
@@ skipping 43 matching lines @@
             actionable>
           <div class="start">$i18n{storageTitle}</div>
           <button class="subpage-arrow" is="paper-icon-button-light"
               aria-label="$i18n{storageTitle}"></button>
         </div>
         <template is="dom-if" if="[[enablePowerSettings_]]">
           <div id="powerRow" class="settings-box" on-tap="onPowerTap_"
               actionable>
             <div class="start">$i18n{powerTitle}</div>
             <button class="subpage-arrow" is="paper-icon-button-light"
-                arial-label="$i18n{powerTitle}"></button>
+                aria-label="$i18n{powerTitle}"></button>
           </div>
         </template>
       </neon-animatable>
       <template is="dom-if" route-path="/pointer-overlay">
         <settings-subpage
             associated-control="[[$$('#pointersRow')]]"
             page-title="[[getPointersTitle_(hasMouse_, hasTouchpad_)]]">
           <settings-pointers prefs="{{prefs}}"
               has-mouse="[[hasMouse_]]" has-touchpad="[[hasTouchpad_]]">
           </settings-pointers>
@@ skipping 33 matching lines @@
             associated-control="[[$$('#powerRow')]]"
             page-title="$i18n{powerTitle}">
           <settings-power enable-power-settings="[[enablePowerSettings_]]">
           </settings-power>
         </settings-subpage>
       </template>
     </settings-animated-pages>
   </template>
   <script src="device_page.js"></script>
 </dom-module>