Reimplement automation API on top of C++-backed AXTree.

ui/accessibility/ax_tree_unittest.cc

 // Copyright 2013 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.
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/accessibility/ax_node.h"
 #include "ui/accessibility/ax_serializable_tree.h"
 #include "ui/accessibility/ax_tree.h"
@@ skipping 307 matching lines @@
   update.nodes[0].role = AX_ROLE_ROOT_WEB_AREA;
   update.nodes[0].child_ids.push_back(4);
   update.nodes[1].id = 4;
 
   FakeAXTreeDelegate fake_delegate;
   tree.SetDelegate(&fake_delegate);
 
   EXPECT_TRUE(tree.Unserialize(update));
 
   ASSERT_EQ(2U, fake_delegate.deleted_ids().size());
-  EXPECT_EQ(2, fake_delegate.deleted_ids()[0]);
-  EXPECT_EQ(1, fake_delegate.deleted_ids()[1]);
+  EXPECT_EQ(1, fake_delegate.deleted_ids()[0]);
+  EXPECT_EQ(2, fake_delegate.deleted_ids()[1]);
 
   ASSERT_EQ(1U, fake_delegate.subtree_deleted_ids().size());
   EXPECT_EQ(1, fake_delegate.subtree_deleted_ids()[0]);
 
   ASSERT_EQ(2U, fake_delegate.created_ids().size());
   EXPECT_EQ(3, fake_delegate.created_ids()[0]);
   EXPECT_EQ(4, fake_delegate.created_ids()[1]);
 
   ASSERT_EQ(1U, fake_delegate.subtree_creation_finished_ids().size());
   EXPECT_EQ(3, fake_delegate.subtree_creation_finished_ids()[0]);
 
   ASSERT_EQ(1U, fake_delegate.node_creation_finished_ids().size());
   EXPECT_EQ(4, fake_delegate.node_creation_finished_ids()[0]);
 
   ASSERT_EQ(true, fake_delegate.root_changed());
 
   tree.SetDelegate(NULL);
 }
 
 }  // namespace ui