Revert of Refactor content/renderer/accessibility to use AXTreeSerializer.

content/renderer/accessibility/renderer_accessibility_focus_only.cc

 // Copyright (c) 2012 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 "content/renderer/accessibility/renderer_accessibility_focus_only.h"
 
 #include "content/renderer/render_view_impl.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
@@ skipping 79 matching lines @@
   // If we want to update the browser's accessibility tree but not send a
   // native focus changed event, we can send a LayoutComplete
   // event, which doesn't post a native event on Windows.
   event.event_type =
       send_focus_event ? ui::AX_EVENT_FOCUS : ui::AX_EVENT_LAYOUT_COMPLETE;
 
   // Set the id that the event applies to: the root node if nothing
   // has focus, otherwise the focused node.
   event.id = node_has_focus ? next_id_ : 1;
 
-  event.update.nodes.resize(2);
-  ui::AXNodeData& root = event.update.nodes[0];
-  ui::AXNodeData& child = event.update.nodes[1];
+  event.nodes.resize(2);
+  ui::AXNodeData& root = event.nodes[0];
+  ui::AXNodeData& child = event.nodes[1];
 
   // Always include the root of the tree, the document. It always has id 1.
   root.id = 1;
   root.role = ui::AX_ROLE_ROOT_WEB_AREA;
   root.state =
       (1 << ui::AX_STATE_READ_ONLY) |
       (1 << ui::AX_STATE_FOCUSABLE);
   if (!node_has_focus)
     root.state |= (1 << ui::AX_STATE_FOCUSED);
   root.location = gfx::Rect(render_view_->size());
@@ skipping 33 matching lines @@
 
   Send(new AccessibilityHostMsg_Events(routing_id(), events));
 
   // Increment the id, wrap back when we get past a million.
   next_id_++;
   if (next_id_ > 1000000)
     next_id_ = kInitialId;
 }
 
 }  // namespace content