add HideAndClose in preference to having Close sometimes magically defer

ui/views/widget/native_widget_aura.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_aura.h"
 
 #include "base/bind.h"
 #include "base/string_util.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/activation_client.h"
@@ skipping 412 matching lines @@
 }
 
 void NativeWidgetAura::Show() {
   ShowWithWindowState(ui::SHOW_STATE_INACTIVE);
 }
 
 void NativeWidgetAura::Hide() {
   window_->Hide();
 }
 
+void NativeWidgetAura::HideAndClose() {
+  Close();
+}
+
 void NativeWidgetAura::ShowMaximizedWithBounds(
     const gfx::Rect& restored_bounds) {
   ShowWithWindowState(ui::SHOW_STATE_MAXIMIZED);
   SetRestoreBounds(window_, restored_bounds);
 }
 
 void NativeWidgetAura::ShowWithWindowState(ui::WindowShowState state) {
   if (state == ui::SHOW_STATE_MAXIMIZED || state == ui::SHOW_STATE_FULLSCREEN)
     window_->SetProperty(aura::client::kShowStateKey, state);
   window_->Show();
@@ skipping 588 matching lines @@
   return aura::Env::GetInstance()->is_mouse_button_down();
 }
 
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   return aura::Env::GetInstance()->is_touch_down();
 }
 
 }  // namespace internal
 }  // namespace views