Demo UI for device discovery and registration

chrome/test/data/webui/local_discovery_ui_test.js

+var $ = document.getElementById.bind(document);
+
+function checkTableHasOneRow() {
+  var rows = $('devices-table').querySelectorAll('tr');
+  assertEquals(2, rows.length);
+  var firstRow = rows.item(1);
+  var td = firstRow.firstChild;
+  assertEquals('myService._privet._tcp.local', td.textContent);
+  td = td.nextSibling;
+  assertEquals('myservice.local', td.textContent);
+  td = td.nextSibling;
+  assertEquals('8888', td.textContent);
+  td = td.nextSibling;
+  assertEquals('1.2.3.4', td.textContent);
+  td = td.nextSibling;
+  assertEquals('unknown', td.textContent);
+  td = td.nextSibling;
+  assertEquals('Registered', td.textContent);
+}
+
+function checkTableHasNoRows() {
+  var rows = $('devices-table').querySelectorAll('tr');
+  assertEquals(1, rows.length);
+}