Revert of EasyUnlock: Work around the ghost overlay from CSS animation.

chrome/browser/resources/options/easy_unlock_turn_off_overlay.js

Index: chrome/browser/resources/options/easy_unlock_turn_off_overlay.js
diff --git a/chrome/browser/resources/options/easy_unlock_turn_off_overlay.js b/chrome/browser/resources/options/easy_unlock_turn_off_overlay.js
index b4d0a290829d73658e7460f8abf08c289aa48827..8b2a589843b659ecc5806e1e5778eb4af49adbfe 100644
--- a/chrome/browser/resources/options/easy_unlock_turn_off_overlay.js
+++ b/chrome/browser/resources/options/easy_unlock_turn_off_overlay.js
@@ -92,13 +92,6 @@
       chrome.send('easyUnlockTurnOffOverlayDismissed');
     },
 
-    /** @override */
-    handleCancel: function() {
-      // Make sure keyboard dismiss uses the word around as well.
-      // TODO(xiyuan): Remove the workaround. See http://crbug.com/405250
-      EasyUnlockTurnOffOverlay.dismiss();
-    },
-
     /**
      * Returns the button strip element.
      * @return {HTMLDivElement} The container div of action buttons.
@@ -182,12 +175,7 @@
    * Closes the Easy unlock turn off overlay.
    */
   EasyUnlockTurnOffOverlay.dismiss = function() {
-    // TODO(xiyuan): Remove the workaround and call closeOverly directly.
-    // See http://crbug.com/405250
-    $('easy-unlock-turn-off-spinner').hidden = true;
-    window.setTimeout(function() {
-      PageManager.closeOverlay();
-    }, 100);
+    PageManager.closeOverlay();
   };
 
   /**