add HideAndClose in preference to having Close sometimes magically defer

ui/views/widget/native_widget_win.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/widget/native_widget_win.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include <algorithm>
@@ skipping 267 matching lines @@
 }
 
 void NativeWidgetWin::Show() {
   message_handler_->Show();
 }
 
 void NativeWidgetWin::Hide() {
   message_handler_->Hide();
 }
 
+void NativeWidgetWin::HideAndClose() {
+  Close();
+}
+
 void NativeWidgetWin::ShowMaximizedWithBounds(
     const gfx::Rect& restored_bounds) {
   message_handler_->ShowMaximizedWithBounds(restored_bounds);
 }
 
 void NativeWidgetWin::ShowWithWindowState(ui::WindowShowState show_state) {
   message_handler_->ShowWindowWithState(show_state);
 }
 
 bool NativeWidgetWin::IsVisible() const {
@@ skipping 676 matching lines @@
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   // This currently isn't necessary because we're not generating touch events on
   // windows.  When we do, this will need to be updated.
   return false;
 }
 
 }  // namespace internal
 
 }  // namespace views