Make Widget ownership a little clearer by expressing it in terms of an enum.

views/widget/native_widget_gtk.h

 // Copyright (c) 2011 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.
 
 #ifndef VIEWS_WIDGET_NATIVE_WIDGET_GTK_H_
 #define VIEWS_WIDGET_NATIVE_WIDGET_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 308 matching lines @@
   // WARNING: RootView's destructor calls into the TooltipManager. As such, this
   // must be destroyed AFTER root_view_.
   scoped_ptr<TooltipManagerGtk> tooltip_manager_;
 
   scoped_ptr<DropTargetGtk> drop_target_;
 
   // The following factory is used to delay destruction.
   ScopedRunnableMethodFactory<NativeWidgetGtk> close_widget_factory_;
 
   // See class documentation for Widget in widget.h for a note about ownership.
-  bool delete_on_destroy_;
+  Widget::InitParams::Ownership ownership_;
 
   // See description above make_transparent for details.
   bool transparent_;
 
   // Makes the window pass all events through to any windows behind it.
   // Set during SetInitParams before the widget is created. The actual work of
   // making the window ignore events is done by ConfigureWidgetForIgnoreEvents.
   bool ignore_events_;
 
   // See note in DropObserver for details on this.
@@ skipping 61 matching lines @@
   bool painted_;
 
   scoped_ptr<InputMethod> input_method_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeWidgetGtk);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_NATIVE_WIDGET_GTK_H_