Implement AutomationNode.querySelector().

chrome/test/data/extensions/api_test/automation/tests/tabs/common.js

Index: chrome/test/data/extensions/api_test/automation/tests/tabs/common.js
diff --git a/chrome/test/data/extensions/api_test/automation/tests/tabs/common.js b/chrome/test/data/extensions/api_test/automation/tests/tabs/common.js
index af464a2573a079b980d4cbcb2470a88c6610d6b7..0a3350066d012fc7031e4dccedddcaf9bff1aab2 100644
--- a/chrome/test/data/extensions/api_test/automation/tests/tabs/common.js
+++ b/chrome/test/data/extensions/api_test/automation/tests/tabs/common.js
@@ -18,8 +18,9 @@ function createTab(url, callback) {
   });
 }
 
-function setUpAndRunTests(allTests) {
-  getUrlFromConfig(function(url) {
+function setUpAndRunTests(allTests, opt_path) {
+  var path = opt_path || 'index.html';
+  getUrlFromConfig(path, function(url) {
     createTab(url, function(unused_tab) {
       chrome.automation.getTree(function (returnedRootNode) {
         rootNode = returnedRootNode;
@@ -35,10 +36,10 @@ function setUpAndRunTests(allTests) {
   });
 }
 
-function getUrlFromConfig(callback) {
+function getUrlFromConfig(path, callback) {
   chrome.test.getConfig(function(config) {
     assertTrue('testServer' in config, 'Expected testServer in config');
-    var url = 'http://a.com:PORT/index.html'
+    var url = ('http://a.com:PORT/' + path)
         .replace(/PORT/, config.testServer.port);
     callback(url)
   });