| Index: tracing/tracing/ui/base/info_bar.html | 
| diff --git a/tracing/tracing/ui/base/info_bar.html b/tracing/tracing/ui/base/info_bar.html | 
| index 49a00f09cbcb21ff42c63dcb984c9c4a69dee9a7..8f471a05f8aa2ee689789bcead4ed5fe12c1fc7b 100644 | 
| --- a/tracing/tracing/ui/base/info_bar.html | 
| +++ b/tracing/tracing/ui/base/info_bar.html | 
| @@ -59,14 +59,14 @@ Polymer({ | 
| }, | 
|  | 
| get visible() { | 
| -    return !this.classList.contains('info-bar-hidden'); | 
| +    return !Polymer.dom(this).classList.contains('info-bar-hidden'); | 
| }, | 
|  | 
| set visible(visible) { | 
| if (visible) | 
| -      this.classList.remove('info-bar-hidden'); | 
| +      Polymer.dom(this).classList.remove('info-bar-hidden'); | 
| else | 
| -      this.classList.add('info-bar-hidden'); | 
| +      Polymer.dom(this).classList.add('info-bar-hidden'); | 
| }, | 
|  | 
| removeAllButtons: function() { | 
|  |