Migrate <cr-dialog> from PaperDialogBehavior to native <dialog>.

chrome/test/data/webui/settings/easy_unlock_browsertest_chromeos.js

Index: chrome/test/data/webui/settings/easy_unlock_browsertest_chromeos.js
diff --git a/chrome/test/data/webui/settings/easy_unlock_browsertest_chromeos.js b/chrome/test/data/webui/settings/easy_unlock_browsertest_chromeos.js
index 4afa4250c2d16e820d24c040a73e102e05f98653..d621471250da348745be981b032e24ec0a8e7a6f 100644
--- a/chrome/test/data/webui/settings/easy_unlock_browsertest_chromeos.js
+++ b/chrome/test/data/webui/settings/easy_unlock_browsertest_chromeos.js
@@ -209,7 +209,7 @@ TEST_F('SettingsEasyUnlockBrowserTest', 'MAYBE_EasyUnlock', function() {
         return browserProxy.whenCalled('cancelTurnOffFlow');
       }).then(function() {
         Polymer.dom.flush();
-        expectFalse(turnOffDialog.$.dialog.opened);
+        expectFalse(turnOffDialog.$.dialog.open);
       });
     });
   });