Make web content accessibility tree a descendant of main window's tree again

views/controls/tabbed_pane/native_tabbed_pane_win.h

 // Copyright (c) 2011 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 VIEWS_CONTROLS_TABBED_PANE_NATIVE_TABBED_PANE_WIN_H_
 #define VIEWS_CONTROLS_TABBED_PANE_NATIVE_TABBED_PANE_WIN_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 31 matching lines @@
   virtual void CreateNativeControl();
   virtual bool ProcessMessage(UINT message,
                               WPARAM w_param,
                               LPARAM l_param,
                               LRESULT* result);
 
   // View overrides:
   virtual void Layout();
   virtual FocusTraversable* GetFocusTraversable();
   virtual void ViewHierarchyChanged(bool is_add, View *parent, View *child);
-  virtual Widget* GetChildWidget();
 
  private:
   // Called upon creation of native control to initialize tabs that are added
   // before the native control is created.
   void InitializeTabs();
 
   // Adds a tab with the given content to native control at the given index.
   void AddNativeTab(int index, const std::wstring& title);
 
   // Changes the contents view to the view associated with the tab at |index|.
@@ skipping 21 matching lines @@
 
   // The window displayed in the tab.
   Widget* content_window_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeTabbedPaneWin);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_TABBED_PANE_NATIVE_TABBED_PANE_WIN_H_