Update browser cache of accessibility tree on renderer sub-tree changes....

chrome/browser/renderer_host/render_widget_host_view_win.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #pragma once
 
 #include <atlbase.h>
 #include <atlapp.h>
@@ skipping 139 matching lines @@
   virtual void SetTooltipText(const std::wstring& tooltip_text);
   virtual BackingStore* AllocBackingStore(const gfx::Size& size);
   virtual VideoLayer* AllocVideoLayer(const gfx::Size& size);
   virtual void SetBackground(const SkBitmap& background);
   virtual bool ContainsNativeView(gfx::NativeView native_view) const;
   virtual void SetVisuallyDeemphasized(bool deemphasized);
   virtual void UpdateAccessibilityTree(
       const webkit_glue::WebAccessibility& tree);
   virtual void OnAccessibilityFocusChange(int acc_obj_id);
   virtual void OnAccessibilityObjectStateChange(int acc_obj_id);
+  virtual void OnAccessibilityObjectChildrenChange(
+      const std::vector<webkit_glue::WebAccessibility>& acc_obj);
 
   // Implementation of NotificationObserver:
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   // Implementation of BrowserAccessibilityDelegate:
   virtual void SetAccessibilityFocus(int acc_obj_id);
   virtual void AccessibilityDoDefaultAction(int acc_obj_id);
+  virtual void AccessibilityObjectChildrenChangeAck();
 
  protected:
   // Windows Message Handlers
   LRESULT OnCreate(CREATESTRUCT* create_struct);
   void OnActivate(UINT, BOOL, HWND);
   void OnDestroy();
   void OnPaint(HDC unused_dc);
   void OnNCPaint(HRGN update_region);
   LRESULT OnEraseBkgnd(HDC dc);
   LRESULT OnSetCursor(HWND window, UINT hittest_code, UINT mouse_message_id);
@@ skipping 163 matching lines @@
   NotificationRegistrar registrar_;
 
   // Stores the current text input type received by ImeUpdateTextInputState()
   // method.
   WebKit::WebTextInputType text_input_type_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewWin);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_