OobeDialogHostBehavior: Support oobe-adaptive-dialog

Bug: 1151292
Change-Id: Iff89c1871ad8c496a9a90dfc2f216d6f2d813a84
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2595428Reviewed-by: Roman Sorokin [CET] <rsorokin@chromium.org>
Commit-Queue: Roman Aleksandrov <raleksandrov@google.com>
Cr-Commit-Position: refs/heads/master@{#838131}

chrome/browser/resources/chromeos/login/components/oobe_dialog_host_behavior.js

@@ -18,7 +18,7 @@ var OobeDialogHostBehavior = {
    */
   propagateOnBeforeShow(selector) {
     if (!selector)
-      selector = 'oobe-dialog';
+      selector = 'oobe-dialog,oobe-adaptive-dialog';
 
     var screens = Polymer.dom(this.root).querySelectorAll(selector);
     for (var i = 0; i < screens.length; ++i) {