Refactor content/renderer/accessibility to use AXTreeSerializer (re-land).

content/browser/accessibility/browser_accessibility_manager.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/browser/accessibility/browser_accessibility_manager.h"
 
 #include "base/logging.h"
 #include "content/browser/accessibility/browser_accessibility.h"
 #include "content/common/accessibility_messages.h"
 
@@ skipping 113 matching lines @@
   renderer_id_map_.erase(renderer_id);
 }
 
 void BrowserAccessibilityManager::OnAccessibilityEvents(
     const std::vector<AccessibilityHostMsg_EventParams>& params) {
   bool should_send_initial_focus = false;
 
   // Process all changes to the accessibility tree first.
   for (uint32 index = 0; index < params.size(); index++) {
     const AccessibilityHostMsg_EventParams& param = params[index];
-    if (!UpdateNodes(param.nodes))
+    if (!UpdateNodes(param.update.nodes))
       return;
 
     // Set initial focus when a page is loaded.
     ui::AXEvent event_type = param.event_type;
     if (event_type == ui::AX_EVENT_LOAD_COMPLETE) {
       if (!focus_) {
         SetFocus(root_, false);
         should_send_initial_focus = true;
       }
     }
@@ skipping 279 matching lines @@
   // Keep track of what node is focused.
   if (src.role != ui::AX_ROLE_ROOT_WEB_AREA &&
       src.role != ui::AX_ROLE_WEB_AREA &&
       (src.state >> ui::AX_STATE_FOCUSED & 1)) {
     SetFocus(instance, false);
   }
   return success;
 }
 
 }  // namespace content