Modify devices page to match the latest mocks

chrome/test/data/webui/local_discovery_ui_test.js

Index: chrome/test/data/webui/local_discovery_ui_test.js
diff --git a/chrome/test/data/webui/local_discovery_ui_test.js b/chrome/test/data/webui/local_discovery_ui_test.js
index d4b96f7975b46c869e04313d30d9fe3de58dff9d..16e4bbe4ac7e7bb8e8e2d52f6222c6422271d52c 100644
--- a/chrome/test/data/webui/local_discovery_ui_test.js
+++ b/chrome/test/data/webui/local_discovery_ui_test.js
@@ -5,7 +5,7 @@
 var $ = document.getElementById.bind(document);
 
 function checkOneDevice() {
-  var devices = $('registered-devices').children;
+  var devices = $('register-device-list').children;
   assertEquals(1, devices.length);
   var firstDevice = devices[0];
 
@@ -21,6 +21,5 @@ function checkOneDevice() {
 }
 
 function checkNoDevices() {
-  assertEquals(0, $('unregistered-devices').children.length);
-  assertEquals(0, $('registered-devices').children.length);
+  assertEquals(0, $('register-device-list').children.length);
 }