Discover app: moar dummy functions

Bug: none
Change-Id: I2e9c37a3f8c60c4e99d93ab06a26393e6115545d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1847283Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Commit-Queue: Roman Sorokin [CET] <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706183}

chrome/browser/resources/chromeos/login/discover/discover_app.js

@@ -31,6 +31,9 @@ cr.define('cr.ui.Oobe', function() {
     enableKeyboardFlow: function(data) {},
     refreshA11yInfo: function(data) {},
     setClientAreaSize: function(data) {},
+    setLabelText: function(data) {},
+    setShelfHeight: function(data) {},
+    setVirtualKeyboardShown: function(data) {},
     showAPIKeysNotice: function(data) {},
     showOobeUI: function(data) {},
     showVersion: function(data) {},