Add verbose logging for native accessibility events.

content/browser/accessibility/browser_accessibility.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.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 713 matching lines @@
   if (descendant_result)
     return descendant_result;
   if (child_result)
     return child_result;
 
   return this;
 }
 
 void BrowserAccessibility::Destroy() {
   // Allow the object to fire a TextRemoved notification.
-  manager_->NotifyAccessibilityEvent(ui::AX_EVENT_HIDE, this);
+  manager()->NotifyAccessibilityEvent(
+      BrowserAccessibilityEvent::FromTreeChange,
+      ui::AX_EVENT_HIDE,
+      this);
   node_ = NULL;
   manager_ = NULL;
 
   if (unique_id_)
     g_unique_id_map.Get().erase(unique_id_);
   unique_id_ = 0;
 
   NativeReleaseReference();
 }
 
@@ skipping 426 matching lines @@
       break;
 
     manager = root->GetParent()->manager();
     root = manager->GetRoot();
   }
 
   return bounds;
 }
 
 }  // namespace content