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

views/controls/native/native_view_host_gtk.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/controls/native/native_view_host_gtk.h"
 
 #include <gtk/gtk.h>
 #include <algorithm>
 
 #include "base/logging.h"
@@ skipping 238 matching lines @@
 void NativeViewHostGtk::HideWidget() {
   if (fixed_)
     gtk_widget_hide(fixed_);
 }
 
 void NativeViewHostGtk::SetFocus() {
   DCHECK(host_->native_view());
   gtk_widget_grab_focus(host_->native_view());
 }
 
+gfx::NativeViewAccessible NativeViewHostGtk::GetNativeViewAccessible() {
+  return NULL;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // NativeViewHostGtk, private:
 
 void NativeViewHostGtk::CreateFixed(bool needs_window) {
   GtkWidget* focused_widget = GetFocusedDescendant();
 
   bool focus_event_blocked = false;
   // We move focus around and do not want focus events to be emitted
   // during this process.
   if (fixed_) {
@@ skipping 99 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // NativeViewHostWrapper, public:
 
 // static
 NativeViewHostWrapper* NativeViewHostWrapper::CreateWrapper(
     NativeViewHost* host) {
   return new NativeViewHostGtk(host);
 }
 
 }  // namespace views