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

chrome/browser/ui/views/dropdown_bar_host.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/dropdown_bar_host.h"
 
 #include <algorithm>
 
 #include "chrome/browser/ui/view_ids.h"
 #include "chrome/browser/ui/views/dropdown_bar_host_delegate.h"
@@ skipping 45 matching lines @@
                            DropdownBarHostDelegate* delegate) {
   DCHECK(view);
   DCHECK(delegate);
 
   view_ = view;
   delegate_ = delegate;
 
   // Initialize the host.
   host_.reset(new views::Widget);
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_CONTROL);
-  params.delete_on_destroy = false;
+  params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.parent_widget = browser_view_->GetWidget();
   host_->Init(params);
   host_->SetContentsView(view_);
 
   // Start listening to focus changes, so we can register and unregister our
   // own handler for Escape.
   focus_manager_ =
       views::FocusManager::GetFocusManagerForNativeView(host_->GetNativeView());
   if (focus_manager_) {
     focus_manager_->AddFocusChangeListener(this);
@@ skipping 255 matching lines @@
   focus_manager_->RegisterAccelerator(escape, this);
   esc_accel_target_registered_ = true;
 }
 
 void DropdownBarHost::UnregisterAccelerators() {
   DCHECK(esc_accel_target_registered_);
   views::Accelerator escape(ui::VKEY_ESCAPE, false, false, false);
   focus_manager_->UnregisterAccelerator(escape, this);
   esc_accel_target_registered_ = false;
 }