From f42c8c14bd3bc4d2df30c8e2666ce533049a7903 Mon Sep 17 00:00:00 2001
From: YUKI Hiroshi <shimoda@clear-code.com>
Date: Fri, 25 Sep 2015 15:10:19 +0900
Subject: [PATCH] Output attribute old value in the debug print

---
 modules/browserUIShowHideObserver.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/browserUIShowHideObserver.js b/modules/browserUIShowHideObserver.js
index 86aabfd7..ed07c30a 100644
--- a/modules/browserUIShowHideObserver.js
+++ b/modules/browserUIShowHideObserver.js
@@ -63,6 +63,7 @@ BrowserUIShowHideObserver.prototype = {
 			childList       : true,
 			attributes      : true,
 			subtree         : true,
+			attributeOldValue: DEBUG,
 			attributeFilter : [
 				'hidden',
 				'collapsed',