| Index: tracing/tracing/ui/tracks/ruler_track.html | 
| diff --git a/tracing/tracing/ui/tracks/ruler_track.html b/tracing/tracing/ui/tracks/ruler_track.html | 
| index 11f02a33779d8d4db5df8474911c9d9fe81cb34f..63d409c45da92c9977dca4c5c8f52b7856a36e1a 100644 | 
| --- a/tracing/tracing/ui/tracks/ruler_track.html | 
| +++ b/tracing/tracing/ui/tracks/ruler_track.html | 
| @@ -33,7 +33,7 @@ tr.exportTo('tr.ui.tracks', function() { | 
|  | 
| decorate: function(viewport) { | 
| tr.ui.tracks.Track.prototype.decorate.call(this, viewport); | 
| -      this.classList.add('ruler-track'); | 
| +      Polymer.dom(this).classList.add('ruler-track'); | 
| this.strings_secs_ = []; | 
| this.strings_msecs_ = []; | 
| this.strings_usecs_ = []; | 
| @@ -55,9 +55,9 @@ tr.exportTo('tr.ui.tracks', function() { | 
|  | 
| viewportChange_: function() { | 
| if (this.viewport.interestRange.isEmpty) | 
| -        this.classList.remove('tall-mode'); | 
| +        Polymer.dom(this).classList.remove('tall-mode'); | 
| else | 
| -        this.classList.add('tall-mode'); | 
| +        Polymer.dom(this).classList.add('tall-mode'); | 
| }, | 
|  | 
| draw: function(type, viewLWorld, viewRWorld) { | 
|  |