Improve the notifications sent from AXTree updates.

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 "base/command_line.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/windows_version.h"
 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
@@ skipping 245 matching lines @@
       tracked_scroll_object_ &&
       tracked_scroll_object_->IsDescendantOf(node)) {
     MaybeCallNotifyWinEvent(
         IA2_EVENT_VISIBLE_DATA_CHANGED,
         tracked_scroll_object_->ToBrowserAccessibilityWin()->unique_id_win());
     tracked_scroll_object_->Release();
     tracked_scroll_object_ = NULL;
   }
 }
 
-void BrowserAccessibilityManagerWin::OnRootChanged(ui::AXNode* new_root) {
-  // In order to make screen readers aware of the new accessibility root,
-  // we need to fire a focus event on it.
-  OnWindowFocused();
+void BrowserAccessibilityManagerWin::OnAtomicUpdateFinished(
+    bool root_changed,
+    const std::vector<ui::AXTreeDelegate::Change>& changes) {
+  BrowserAccessibilityManager::OnAtomicUpdateFinished(root_changed, changes);
+
+  if (root_changed) {
+    // In order to make screen readers aware of the new accessibility root,
+    // we need to fire a focus event on it.
+    OnWindowFocused();
+  }
 }
 
 void BrowserAccessibilityManagerWin::TrackScrollingObject(
     BrowserAccessibilityWin* node) {
   if (tracked_scroll_object_)
     tracked_scroll_object_->Release();
   tracked_scroll_object_ = node;
   tracked_scroll_object_->AddRef();
 }
 
@@ skipping 19 matching lines @@
           child_manager->GetFromUniqueIdWin(unique_id_win);
       if (result)
         return result;
     }
   }
 
   return NULL;
 }
 
 }  // namespace content