Implement automatic load of composed/embedded automation trees

chrome/browser/ui/ash/accessibility/automation_manager_ash.cc

 // 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.
 
 #include "chrome/browser/ui/ash/accessibility/automation_manager_ash.h"
 
 #include <vector>
 
 #include "base/memory/singleton.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 25 matching lines @@
   // Reset the serializer to save memory.
   current_tree_serializer_->Reset();
 }
 
 void AutomationManagerAsh::HandleEvent(BrowserContext* context,
                                          views::View* view,
                                          ui::AXEvent event_type) {
   if (!enabled_) {
     return;
   }
-
+  current_tree_serializer_->Reset();

[dmazzoni, 2014/10/29 06:53:30]

Why is this needed?

   // TODO(dtseng): Events should only be delivered to extensions with the
   // desktop permission.
   views::Widget* widget = view->GetWidget();
   if (!widget)
     return;
 
   if (!context && g_browser_process->profile_manager()) {
     context = g_browser_process->profile_manager()->GetLastUsedProfile();
   }
   if (!context) {
@@ skipping 50 matching lines @@
                                              update.nodes,
                                              event_type,
                                              aura_obj->GetID(),
                                              0, /* process_id */
                                              0 /* routing_id */);
   std::vector<content::AXEventNotificationDetails> details;
   details.push_back(detail);
   extensions::automation_util::DispatchAccessibilityEventsToAutomation(
       details, context, gfx::Vector2d());
 }