Use template specialization to generate WindowProperty code

athena/extensions/athena_constrained_window_views_client.cc

 // Copyright 2014 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 "athena/extensions/athena_constrained_window_views_client.h"
 
 #include "athena/activity/public/activity.h"
 #include "athena/activity/public/activity_manager.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "components/constrained_window/constrained_window_views.h"
 #include "components/constrained_window/constrained_window_views_client.h"
 #include "components/web_modal/web_contents_modal_dialog_host.h"
 #include "extensions/browser/guest_view/guest_view_base.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/aura/window_property.h"
 
+DECLARE_WINDOW_PROPERTY_TYPE(web_modal::ModalDialogHost*);
+
 namespace athena {
 namespace {
 
 // Provides the host environment for web modal dialogs. See
 // web_modal::WebContentsModalDialogHost, and ModalDialogHost for more
 // details.
 class ModalDialogHostImpl : public web_modal::WebContentsModalDialogHost,
                             public aura::WindowObserver {
  public:
   // Returns a modal dialog host for |window|. If it doesn't exist it creates
@@ skipping 104 matching lines @@
 void InstallConstrainedWindowViewsClient() {
   constrained_window::SetConstrainedWindowViewsClient(
       make_scoped_ptr(new AthenaConstrainedWindowViewsClient));
 }
 
 void UninstallConstrainedWindowViewsClient() {
   constrained_window::SetConstrainedWindowViewsClient(nullptr);
 }
 
 }  // namespace athena