MD Settings: Fix case where "Check for updates" is accidentally shown.

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

Index: chrome/test/data/webui/settings/about_page_tests.js
diff --git a/chrome/test/data/webui/settings/about_page_tests.js b/chrome/test/data/webui/settings/about_page_tests.js
index dfb4a1d8679f6bea187bc627a9010c66e9e9959e..b094b634ffa21b3a002589767bd8877122adf198 100644
--- a/chrome/test/data/webui/settings/about_page_tests.js
+++ b/chrome/test/data/webui/settings/about_page_tests.js
@@ -380,6 +380,17 @@ cr.define('settings_about_page', function() {
           assertTrue(relaunch.hidden);
           assertTrue(relaunchAndPowerwash.hidden);
 
+          // Check that the "Check for updates" button gets hidden for certain
+          // UpdateStatus values, even if the CHECKING state was never
+          // encountered (for example triggering update from crosh command
+          // line).
+          fireStatusChanged(UpdateStatus.UPDATING);
+          assertAllHidden();
+          fireStatusChanged(UpdateStatus.NEARLY_UPDATED);
+          assertTrue(checkForUpdates.hidden);
+          assertFalse(relaunch.hidden);
+          assertTrue(relaunchAndPowerwash.hidden);
+
           fireStatusChanged(UpdateStatus.CHECKING);
           assertAllHidden();