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

chrome/browser/ui/views/tab_contents/native_tab_contents_view_win.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_win.h"
 
 #include "chrome/browser/renderer_host/render_widget_host_view_win.h"
 #include "chrome/browser/tab_contents/web_drop_target_win.h"
 #include "chrome/browser/ui/views/tab_contents/tab_contents_drag_win.h"
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_delegate.h"
@@ skipping 57 matching lines @@
   delegate_->OnNativeTabContentsViewDraggingEnded();
   drag_handler_ = NULL;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeTabContentsViewWin, NativeTabContentsView implementation:
 
 void NativeTabContentsViewWin::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;
   params.parent = GetHiddenTabHostWindow();
   GetWidget()->Init(params);
 
   // Remove the root view drop target so we can register our own.
   RevokeDragDrop(GetNativeView());
   drop_target_ = new WebDropTarget(GetNativeView(),
                                    delegate_->GetTabContents());
 }
 
 void NativeTabContentsViewWin::Unparent() {
@@ skipping 223 matching lines @@
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeTabContentsView, public:
 
 // static
 NativeTabContentsView* NativeTabContentsView::CreateNativeTabContentsView(
     internal::NativeTabContentsViewDelegate* delegate) {
   return new NativeTabContentsViewWin(delegate);
 }