| Index: tracing/tracing/ui/tracks/container_track.html | 
| diff --git a/tracing/tracing/ui/tracks/container_track.html b/tracing/tracing/ui/tracks/container_track.html | 
| index cdad43bef5c57541913f6b86c5e7ff78d0c2f71e..bdf2cdaa5ff1ffe5e70cea465b2f9319c4594bcb 100644 | 
| --- a/tracing/tracing/ui/tracks/container_track.html | 
| +++ b/tracing/tracing/ui/tracks/container_track.html | 
| @@ -120,7 +120,7 @@ tr.exportTo('tr.ui.tracks', function() { | 
|  | 
| clearTracks_: function() { | 
| this.tracks_.forEach(function(track) { | 
| -        this.removeChild(track); | 
| +        Polymer.dom(this).removeChild(track); | 
| }, this); | 
| } | 
| }; | 
|  |