ChromeOS OOBE: More accessibility fixes.

chrome/browser/resources/chromeos/login/oobe_i18n_dropdown.js

Index: chrome/browser/resources/chromeos/login/oobe_i18n_dropdown.js
diff --git a/chrome/browser/resources/chromeos/login/oobe_i18n_dropdown.js b/chrome/browser/resources/chromeos/login/oobe_i18n_dropdown.js
index 7e7253a9c29968655705b965733c6115178607b5..ff5835a2eeeb5e40a6521d8267593d562b180d82 100644
--- a/chrome/browser/resources/chromeos/login/oobe_i18n_dropdown.js
+++ b/chrome/browser/resources/chromeos/login/oobe_i18n_dropdown.js
@@ -29,6 +29,10 @@ Polymer({
 
     /**
      * ARIA-label for the selection menu.
+     *
+     * Note that we are not using "aria-label" property here, because
+     * we want to pass the label value but not actually declare it as an
+     * ARIA property anywhere but the actual target element.
      */
     labelForAria: String,
   },