Index: tracing/tracing/ui/tracks/chart_track.html |
diff --git a/tracing/tracing/ui/tracks/chart_track.html b/tracing/tracing/ui/tracks/chart_track.html |
index f66728a65334913a555b41995d82e86572fad25b..f736a5bfd135639650c4da4309a5537ad61942c3 100644 |
--- a/tracing/tracing/ui/tracks/chart_track.html |
+++ b/tracing/tracing/ui/tracks/chart_track.html |
@@ -36,7 +36,7 @@ tr.exportTo('tr.ui.tracks', function() { |
decorate: function(viewport) { |
tr.ui.tracks.Track.prototype.decorate.call(this, viewport); |
- this.classList.add('chart-track'); |
+ Polymer.dom(this).classList.add('chart-track'); |
this.series_ = undefined; |
// GUID -> {axis: ChartAxis, series: [ChartSeries]}. |