Index: src/wp-includes/css/admin-bar.css
===================================================================
--- src/wp-includes/css/admin-bar.css	(revision 39531)
+++ src/wp-includes/css/admin-bar.css	(working copy)
@@ -797,15 +797,6 @@
 	html #wpadminbar {
 		height: 46px;
 		min-width: 300px;
-
-	/*	These rules break dropdown tappability on Chrome/Android.
-		-webkit-transform: translate3d(0, 0, 0);
-		-webkit-backface-visibility: hidden;
-		-webkit-transition: 0;
-		transform: translate3d(0, 0, 0);
-		backface-visibility: hidden;
-		transition: 0;
-	*/
 	}
 
 	#wpadminbar * {