Revert of Accessibility: Ignore all anonymous blocks

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

Index: chrome/test/data/extensions/api_test/automation/tests/tabs/find.js
diff --git a/chrome/test/data/extensions/api_test/automation/tests/tabs/find.js b/chrome/test/data/extensions/api_test/automation/tests/tabs/find.js
index 4f0d98efc795a847c86eb2ec0b257997edcbf614..a686ded94d160632f761dc8967476f1392f0ecce 100644
--- a/chrome/test/data/extensions/api_test/automation/tests/tabs/find.js
+++ b/chrome/test/data/extensions/api_test/automation/tests/tabs/find.js
@@ -9,6 +9,7 @@ var link;
 var main;
 var p2;
 var p3;
+var anonGroup;
 var okButton;
 var cancelButton;
 
@@ -35,13 +36,16 @@ function initializeNodes(rootNode) {
   p3 = main.lastChild;
   assertEq(RoleType.paragraph, p3.role);
 
-  okButton = rootNode.children[2];
+  anonGroup = rootNode.lastChild;
+  assertEq(RoleType.group, anonGroup.role);
+
+  okButton = anonGroup.firstChild;
   assertEq(RoleType.button, okButton.role);
   assertEq('Ok', okButton.name);
   assertTrue(StateType.disabled in okButton.state);
   assertTrue(okButton.state.disabled);
 
-  cancelButton = rootNode.children[3];
+  cancelButton = anonGroup.lastChild;
   assertEq(RoleType.button, cancelButton.role);
   assertEq('Cancel', cancelButton.name);
   assertFalse(StateType.disabled in cancelButton.state);
@@ -73,6 +77,13 @@ var allTests = [
     assertEq(p2, main.find({ role: RoleType.paragraph }));
     assertEq([p2, p3], main.findAll({ role: RoleType.paragraph }));
 
+    // Unlike querySelector, can search from an anonymous group without
+    // unexpected results.
+    assertEq(okButton, anonGroup.find({ role: RoleType.button }));
+    assertEq([okButton, cancelButton],
+             anonGroup.findAll({ role: RoleType.button }));
+    assertEq(null, anonGroup.find({ role: RoleType.heading }));
+
     chrome.test.succeed();
   },
 
@@ -90,6 +101,12 @@ var allTests = [
     assertEq([okButton], rootNode.findAll({ role: RoleType.button,
                                             state: { disabled: true }}));
 
+    // Find disabled buttons within a portion of the tree.
+    assertEq(okButton, anonGroup.find({ role: RoleType.button,
+                                       state: { disabled: true }}));
+    assertEq([okButton], anonGroup.findAll({ role: RoleType.button,
+                                            state: { disabled: true }}));
+
     // Find enabled buttons.
     assertEq(cancelButton, rootNode.find({ role: RoleType.button,
                                            state: { disabled: false }}));