views: Packaged app window icon should be system/generic icon, if icon is not set by default.

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 920 matching lines @@
       NOTREACHED();
   }
 
   message_handler_->set_initial_class_style(class_style);
   message_handler_->set_window_style(message_handler_->window_style() | style);
   message_handler_->set_window_ex_style(
       message_handler_->window_ex_style() | ex_style);
 
   has_non_client_view_ = Widget::RequiresNonClientView(params.type);
   message_handler_->set_remove_standard_frame(params.remove_standard_frame);
+  message_handler_->set_use_system_default_icon(params.use_system_default_icon);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Widget, public:
 
 // static
 void Widget::NotifyLocaleChanged() {
   NOTIMPLEMENTED();
 }
 
@@ skipping 152 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