ChromeOS OOBE: fix focus flow in MD-OOBE.

chrome/browser/resources/chromeos/login/oobe_dialog.js

Index: chrome/browser/resources/chromeos/login/oobe_dialog.js
diff --git a/chrome/browser/resources/chromeos/login/oobe_dialog.js b/chrome/browser/resources/chromeos/login/oobe_dialog.js
index 9496e39dc8a9002dd7b349a1ebe2c4f0377ec9a2..e4592fa24fc08a2e2a621ea8cc3e06f6b322ea39 100644
--- a/chrome/browser/resources/chromeos/login/oobe_dialog.js
+++ b/chrome/browser/resources/chromeos/login/oobe_dialog.js
@@ -23,4 +23,17 @@ Polymer({
       reflectToAttribute: true,
     },
   },
+
+  focus: function() {},
+
+  /**
+    * This is called from oobe_welcome when this dialog is shown.
+    */
+  show: function() {
+    var focused = this.getElementsByClassName('focus-on-show');

[stevenjb, 2017/02/14 01:21:32]

nit: focusedElements

[Alexander Alekseev, 2017/02/14 11:59:27]

Done.

+    if (focused)
+      focused[0].focus();
+
+    this.fire('show-dialog');
+  },
 });