| Index: tracing/tracing/ui/tracks/counter_track.html | 
| diff --git a/tracing/tracing/ui/tracks/counter_track.html b/tracing/tracing/ui/tracks/counter_track.html | 
| index 759b24335960c51e984e6d25efe351ef07a8f7e5..5a5317e444baa2d494f48b07c1f5883a5f7d5c53 100644 | 
| --- a/tracing/tracing/ui/tracks/counter_track.html | 
| +++ b/tracing/tracing/ui/tracks/counter_track.html | 
| @@ -28,7 +28,7 @@ tr.exportTo('tr.ui.tracks', function() { | 
|  | 
| decorate: function(viewport) { | 
| tr.ui.tracks.ChartTrack.prototype.decorate.call(this, viewport); | 
| -      this.classList.add('counter-track'); | 
| +      Polymer.dom(this).classList.add('counter-track'); | 
| }, | 
|  | 
| get counter() { | 
|  |