Re-land:

views/accessibility/native_view_accessibility_win.cc

 // 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.
 
 #include "views/accessibility/native_view_accessibility_win.h"
 
 #include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/base/view_prop.h"
 #include "views/controls/button/native_button.h"
 #include "views/widget/widget.h"
@@ skipping 241 matching lines @@
     if (child_id_as_index < view_->child_count()) {
       // Note: child_id is a one based index when indexing children.
       child_view = view_->GetChildViewAt(child_id_as_index);
     } else {
       // Attempt to retrieve a child view with the specified id.
       child_view = view_->GetViewByID(child_id);
     }
   } else {
     // Negative values are used for events fired using the view's WidgetWin
     views::WidgetWin* widget =
-        static_cast<views::WidgetWin*>(view_->GetWidget());
+        static_cast<views::WidgetWin*>(view_->GetWidget()->native_widget());
     child_view = widget->GetAccessibilityViewEventAt(child_id);
   }
 
   if (!child_view) {
     // No child found.
     *disp_child = NULL;
     return E_FAIL;
   }
 
   *disp_child = GetAccessibleForView(child_view);
@@ skipping 472 matching lines @@
     HWND native_view_window , IAccessible** accessible) {
   if (IsWindow(native_view_window)) {
     LRESULT ret = SendMessage(native_view_window, WM_GETOBJECT, 0,
                               OBJID_CLIENT);
     return ObjectFromLresult(ret, IID_IDispatch, 0,
                              reinterpret_cast<void**>(accessible));
   }
 
   return E_FAIL;
 }