Make Widget::Show() creates active windows.

ui/views/controls/menu/menu_host.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/controls/menu/menu_host.h"
 
 #include "base/auto_reset.h"
 #include "base/debug/trace_event.h"
 #include "ui/events/gestures/gesture_recognizer.h"
 #include "ui/gfx/path.h"
@@ skipping 58 matching lines @@
 }
 
 bool MenuHost::IsMenuHostVisible() {
   return IsVisible();
 }
 
 void MenuHost::ShowMenuHost(bool do_capture) {
   // Doing a capture may make us get capture lost. Ignore it while we're in the
   // process of showing.
   base::AutoReset<bool> reseter(&ignore_capture_lost_, true);
-  Show();
+  ShowInactive();
   if (do_capture) {
 #if defined(USE_AURA)
     // Cancel existing touches, so we don't miss some touch release/cancel
     // events due to the menu taking capture.
     ui::GestureRecognizer::Get()->TransferEventsTo(GetNativeWindow(), NULL);
 #endif  // USE_AURA
     native_widget_private()->SetCapture();
   }
 }
 
@@ skipping 51 matching lines @@
   if (destroying_)
     return;
 
   MenuController* menu_controller =
       submenu_->GetMenuItem()->GetMenuController();
   if (menu_controller && !menu_controller->drag_in_progress())
     menu_controller->CancelAll();
 }
 
 }  // namespace views