Makes NativeViewHostWin change the parent of the hwnd when

ui/views/focus/focus_manager.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 "ui/views/focus/focus_manager.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/logging.h"
@@ skipping 460 matching lines @@
 // static
 bool FocusManager::IsTabTraversalKeyEvent(const KeyEvent& key_event) {
   return key_event.key_code() == ui::VKEY_TAB && !key_event.IsControlDown();
 }
 
 void FocusManager::ViewRemoved(View* removed) {
   // If the view being removed contains (or is) the focused view,
   // clear the focus.  However, it's not safe to call ClearFocus()
   // (and in turn ClearNativeFocus()) here because ViewRemoved() can
   // be called while the top level widget is being destroyed.
-  if (focused_view_ && removed && removed->Contains(focused_view_))
+  if (focused_view_ && removed->Contains(focused_view_))
     SetFocusedView(NULL);
 }
 
 void FocusManager::AddFocusChangeListener(FocusChangeListener* listener) {
   focus_change_listeners_.AddObserver(listener);
 }
 
 void FocusManager::RemoveFocusChangeListener(FocusChangeListener* listener) {
   focus_change_listeners_.RemoveObserver(listener);
 }
 
 }  // namespace views