Allow requesting Automation tree by tabId

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Do not test orientation or hover attributes (similar to exclusions on native
 // accessibility), since they can be inconsistent depending on the environment.
 var RemoveUntestedStates = function(state) {
   delete state['horizontal'];
   delete state['hovered'];
   delete state['vertical'];
 };
 
 var allTests = [
   function testSimplePage() {
-    var title = tree.root.attributes['docTitle'];
-    assertEq('Automation Tests', title);
-    RemoveUntestedStates(tree.root.state);
-    assertEq(
-      {enabled: true, focusable: true, readOnly: true},
-      tree.root.state);
-    var children = tree.root.children();
-    assertEq(1, children.length);
+    tree.addEventListener('loadComplete', function() {
+      var title = tree.root.attributes['docTitle'];
+      assertEq('Automation Tests', title);
+      RemoveUntestedStates(tree.root.state);
+      assertEq(
+        {enabled: true, focusable: true, readOnly: true},
+        tree.root.state);
+      var children = tree.root.children();
+      assertEq(1, children.length);
 
-    var body = children[0];
-    assertEq('body', body.attributes['htmlTag']);
+      var body = children[0];
+      assertEq('body', body.attributes['htmlTag']);
 
-    RemoveUntestedStates(body.state);
-    assertEq({enabled: true, readOnly: true},
-             body.state);
+      RemoveUntestedStates(body.state);
+      assertEq({enabled: true, readOnly: true},
+               body.state);
 
-    var contentChildren = body.children();
-    assertEq(3, contentChildren.length);
-    var okButton = contentChildren[0];
-    assertEq('Ok', okButton.attributes['name']);
-    RemoveUntestedStates(okButton.state);
-    assertEq({enabled: true, focusable: true, readOnly: true},
-             okButton.state);
-    var userNameInput = contentChildren[1];
-    assertEq('Username',
-             userNameInput.attributes['description']);
-    RemoveUntestedStates(userNameInput.state);
-    assertEq({enabled: true, focusable: true},
-             userNameInput.state);
-    var cancelButton = contentChildren[2];
-    assertEq('Cancel',
-             cancelButton.attributes['name']);
-    RemoveUntestedStates(cancelButton.state);
-    assertEq({enabled: true, focusable: true, readOnly: true},
-             cancelButton.state);
+      var contentChildren = body.children();
+      assertEq(3, contentChildren.length);
+      var okButton = contentChildren[0];
+      assertEq('Ok', okButton.attributes['name']);
+      RemoveUntestedStates(okButton.state);
+      assertEq({enabled: true, focusable: true, readOnly: true},
+               okButton.state);
+      var userNameInput = contentChildren[1];
+      assertEq('Username',
+               userNameInput.attributes['description']);
+      RemoveUntestedStates(userNameInput.state);
+      assertEq({enabled: true, focusable: true},
+               userNameInput.state);
+      var cancelButton = contentChildren[2];
+      assertEq('Cancel',
+               cancelButton.attributes['name']);
+      RemoveUntestedStates(cancelButton.state);
+      assertEq({enabled: true, focusable: true, readOnly: true},
+               cancelButton.state);
 
-    // Traversal.
-    assertEq(undefined, tree.root.parent());
-    assertEq(tree.root, body.parent());
+      // Traversal.
+      assertEq(undefined, tree.root.parent());
+      assertEq(tree.root, body.parent());
 
-    assertEq(body, tree.root.firstChild());
-    assertEq(body, tree.root.lastChild());
+      assertEq(body, tree.root.firstChild());
+      assertEq(body, tree.root.lastChild());
 
-    assertEq(okButton, body.firstChild());
-    assertEq(cancelButton, body.lastChild());
+      assertEq(okButton, body.firstChild());
+      assertEq(cancelButton, body.lastChild());
 
-    assertEq(body, okButton.parent());
-    assertEq(body, userNameInput.parent());
-    assertEq(body, cancelButton.parent());
+      assertEq(body, okButton.parent());
+      assertEq(body, userNameInput.parent());
+      assertEq(body, cancelButton.parent());
 
-    assertEq(undefined, okButton.previousSibling());
-    assertEq(undefined, okButton.firstChild());
-    assertEq(userNameInput, okButton.nextSibling());
-    assertEq(undefined, okButton.lastChild());
+      assertEq(undefined, okButton.previousSibling());
+      assertEq(undefined, okButton.firstChild());
+      assertEq(userNameInput, okButton.nextSibling());
+      assertEq(undefined, okButton.lastChild());
 
-    assertEq(okButton, userNameInput.previousSibling());
-    assertEq(cancelButton, userNameInput.nextSibling());
+      assertEq(okButton, userNameInput.previousSibling());
+      assertEq(cancelButton, userNameInput.nextSibling());
 
-    assertEq(userNameInput, cancelButton.previousSibling());
-    assertEq(undefined, cancelButton.nextSibling());
+      assertEq(userNameInput, cancelButton.previousSibling());
+      assertEq(undefined, cancelButton.nextSibling());
 
-    chrome.test.succeed();
+      chrome.test.succeed();
+    });
   }
 ];
 
 setUpAndRunTests(allTests);