Index: tracing/tracing/ui/tracks/device_track.html |
diff --git a/tracing/tracing/ui/tracks/device_track.html b/tracing/tracing/ui/tracks/device_track.html |
index dbf38cd5ae0a00009fa10880f7d19f49a0af739c..c29086490f985678599769abd1b79d8c8b7796a8 100644 |
--- a/tracing/tracing/ui/tracks/device_track.html |
+++ b/tracing/tracing/ui/tracks/device_track.html |
@@ -32,7 +32,7 @@ tr.exportTo('tr.ui.tracks', function() { |
decorate: function(viewport) { |
ContainerTrack.prototype.decorate.call(this, viewport); |
- this.classList.add('device-track'); |
+ Polymer.dom(this).classList.add('device-track'); |
this.device_ = undefined; |
this.powerSeriesTrack_ = undefined; |
}, |