options: Fix focus "Show advanced settings..." click focus regression.

ui/webui/resources/js/cr/ui/focus_outline_manager.js

Index: ui/webui/resources/js/cr/ui/focus_outline_manager.js
diff --git a/ui/webui/resources/js/cr/ui/focus_outline_manager.js b/ui/webui/resources/js/cr/ui/focus_outline_manager.js
index f7185d427450b0723ce5eec9234b19045d8d75e0..1adc142ddab8ee17484e47ce56df9553188e10cf 100644
--- a/ui/webui/resources/js/cr/ui/focus_outline_manager.js
+++ b/ui/webui/resources/js/cr/ui/focus_outline_manager.js
@@ -39,10 +39,12 @@ cr.define('cr.ui', function() {
       self.focusByKeyboard_ = false;
     }, true);
 
-    doc.addEventListener('focus', function(event) {
+    function updateVisiblity() {
       // Update visibility only when focus is actually changed.
       self.visible = self.focusByKeyboard_;
-    }, true);
+    }
+    doc.addEventListener('focus', updateVisiblity, true);
+    doc.addEventListener('blur', updateVisiblity, true);
   }
 
   FocusOutlineManager.prototype = {