Various fixes for aria-activedescendant.

content/browser/accessibility/browser_accessibility_manager_win.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_win.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <vector>
@@ skipping 205 matching lines @@
       // accessibility notification.
       break;
   }
 
   if (!node)
     return;
 
   if (event_id != EVENT_MIN)
     MaybeCallNotifyWinEvent(event_id, node);
 
-
   // If this is a layout complete notification (sent when a container scrolls)
   // and there is a descendant tracked object, send a notification on it.
   // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed.
   if (event_type == ui::AX_EVENT_LAYOUT_COMPLETE &&
       tracked_scroll_object_ &&
       tracked_scroll_object_->IsDescendantOf(node)) {
     MaybeCallNotifyWinEvent(
         IA2_EVENT_VISIBLE_DATA_CHANGED, tracked_scroll_object_);
     tracked_scroll_object_->Release();
     tracked_scroll_object_ = NULL;
@@ skipping 104 matching lines @@
 
 void BrowserAccessibilityManagerWin::TrackScrollingObject(
     BrowserAccessibilityWin* node) {
   if (tracked_scroll_object_)
     tracked_scroll_object_->Release();
   tracked_scroll_object_ = node;
   tracked_scroll_object_->AddRef();
 }
 
 }  // namespace content