Make the OOBE network menu accessible by improving keyboard handling

chrome/browser/resources/chromeos/login/oobe_screen_network.html

Index: chrome/browser/resources/chromeos/login/oobe_screen_network.html
===================================================================
--- chrome/browser/resources/chromeos/login/oobe_screen_network.html	(revision 102105)
+++ chrome/browser/resources/chromeos/login/oobe_screen_network.html	(working copy)
@@ -1,20 +1,23 @@
 <div class="step hidden" id="connect">
   <div class="control-with-label">
-    <div i18n-content="selectLanguage" class="label menu-control"></div>
+    <label for="language-select" i18n-content="selectLanguage"
+           class="label menu-control"></label>
     <div class="menu-area">
       <select id="language-select" class="menu-control"></select>
     </div>
   </div>
   <div class="control-with-label">
-    <div i18n-content="selectKeyboard" class="label menu-control"></div>
+    <label for="keyboard-select" i18n-content="selectKeyboard"
+           class="label menu-control"></label>
     <div class="menu-area">
       <select id="keyboard-select" class="menu-control"></select>
     </div>
   </div>
   <div class="control-with-label">
-    <div i18n-content="selectNetwork" class="label menu-control"></div>
+    <label for="networks-list-dropdown" i18n-content="selectNetwork"
+           class="label menu-control"></label>
     <div class="menu-area">
-      <div id="networks-list" class="menu-control" aria-haspopup="true"></div>
+      <div id="networks-list" class="menu-control"></div>
     </div>
   </div>
 </div>