Check if a command can be executed before executing it via a shortcut.

ui/webui/resources/js/cr/ui/command.js

Index: ui/webui/resources/js/cr/ui/command.js
diff --git a/ui/webui/resources/js/cr/ui/command.js b/ui/webui/resources/js/cr/ui/command.js
index 83aa0b4f5db58d12b9161c319e9042e48e184633..1723dd7553c2892055d279c04ac746d970d890bb 100644
--- a/ui/webui/resources/js/cr/ui/command.js
+++ b/ui/webui/resources/js/cr/ui/command.js
@@ -262,6 +262,11 @@ cr.define('cr.ui', function() {
           // We do not want any other element to handle this.
           e.stopPropagation();
 
+          // When invoking a command via a shortcut, we have to manually check
+          // if it can be executed, since focus might not have been changed
+          // what would have updated the command's state.
+          command.canExecuteChange();
+
           command.execute();
           return;
         }