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

chrome/browser/ui/views/tab_contents/native_tab_contents_view_gtk.cc

 // 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.
 
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_gtk.h"
 
 #include "chrome/browser/renderer_host/render_widget_host_view_gtk.h"
 #include "chrome/browser/tab_contents/web_drag_dest_gtk.h"
 #include "chrome/browser/ui/gtk/constrained_window_gtk.h"
 #include "chrome/browser/ui/gtk/tab_contents_drag_source.h"
@@ skipping 87 matching lines @@
   RemoveChild((*item)->widget());
   constrained_windows_.erase(item);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeTabContentsViewGtk, NativeTabContentsView implementation:
 
 void NativeTabContentsViewGtk::InitNativeTabContentsView() {
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_CONTROL);
   params.native_widget = this;
-  params.delete_on_destroy = false;
+  params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   GetWidget()->Init(params);
 
   // We need to own the widget in order to attach/detach the native view to a
   // container.
   gtk_object_ref(GTK_OBJECT(GetWidget()->GetNativeView()));
 }
 
 void NativeTabContentsViewGtk::Unparent() {
 }
 
@@ skipping 137 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeTabContentsView, public:
 
 // static
 NativeTabContentsView* NativeTabContentsView::CreateNativeTabContentsView(
     internal::NativeTabContentsViewDelegate* delegate) {
   return new NativeTabContentsViewGtk(delegate);
 }