Parent the AppInfoDialog using a ModalDialogHost

components/constrained_window/constrained_window_views.cc

Index: components/constrained_window/constrained_window_views.cc
diff --git a/components/constrained_window/constrained_window_views.cc b/components/constrained_window/constrained_window_views.cc
index dd4ada83a5f952a486221259055380cdeb7416cd..3e519408b8a80e8e963ae9e332ac9d2337efc93b 100644
--- a/components/constrained_window/constrained_window_views.cc
+++ b/components/constrained_window/constrained_window_views.cc
@@ -162,6 +162,7 @@ views::Widget* CreateBrowserModalDialogViews(views::DialogDelegate* dialog,
       views::DialogDelegate::CreateDialogWidget(dialog, NULL, parent);
   if (!dialog->UseNewStyleForThisDialog())
     return widget;
+
   DCHECK(constrained_window_views_client);
   ModalDialogHost* host = constrained_window_views_client->
       GetModalDialogHost(parent);
@@ -175,4 +176,21 @@ views::Widget* CreateBrowserModalDialogViews(views::DialogDelegate* dialog,
   return widget;
 }
 
+views::Widget* CreateModalDialogViews(views::DialogDelegate* dialog,
+                                      web_modal::ModalDialogHost* host) {
+  DCHECK(dialog->UseNewStyleForThisDialog());
+  DCHECK(host);
+  DCHECK_NE(ui::MODAL_TYPE_CHILD, dialog->GetModalType());
+  DCHECK_NE(ui::MODAL_TYPE_NONE, dialog->GetModalType());
+
+  views::Widget* widget = views::DialogDelegate::CreateDialogWidget(
+      dialog, NULL, host->GetHostView());
+
+  ModalDialogHostObserver* dialog_host_observer =
+      new WidgetModalDialogHostObserverViews(
+          host, widget, kWidgetModalDialogHostObserverViewsKey);
+  dialog_host_observer->OnPositionRequiresUpdate();
+  return widget;
+}
+
 }  // namespace constrained window