| Index: tracing/tracing/ui/base/chart_base.html | 
| diff --git a/tracing/tracing/ui/base/chart_base.html b/tracing/tracing/ui/base/chart_base.html | 
| index 0a84aaac9e877c5fc6426c50a589978752065f46..0d016cb4c5664fcc735231d525a5bdcbe845002e 100644 | 
| --- a/tracing/tracing/ui/base/chart_base.html | 
| +++ b/tracing/tracing/ui/base/chart_base.html | 
| @@ -66,7 +66,7 @@ tr.exportTo('tr.ui.b', function() { | 
| __proto__: HTMLDivElement.prototype, | 
|  | 
| decorate: function() { | 
| -      this.classList.add('chart-base'); | 
| +      Polymer.dom(this).classList.add('chart-base'); | 
| this.chartTitle_ = undefined; | 
| this.seriesKeys_ = undefined; | 
| this.width_ = 400; | 
|  |