| Index: tracing/tracing/ui/brushing_state_controller.html | 
| diff --git a/tracing/tracing/ui/brushing_state_controller.html b/tracing/tracing/ui/brushing_state_controller.html | 
| index c3b9e83952bcaa7616bcd5c6ba51e9f66cb2d05e..846afb4b977f86aa5d858d43ddd8b86944dce689 100644 | 
| --- a/tracing/tracing/ui/brushing_state_controller.html | 
| +++ b/tracing/tracing/ui/brushing_state_controller.html | 
| @@ -291,8 +291,8 @@ tr.exportTo('tr.c', function() { | 
|  | 
| // Possibly inside a shadow DOM. | 
| var currentNode = currentElement; | 
| -      while (currentNode.parentNode) | 
| -        currentNode = currentNode.parentNode; | 
| +      while (Polymer.dom(currentNode).parentNode) | 
| +        currentNode = Polymer.dom(currentNode).parentNode; | 
| currentElement = currentNode.host; | 
| } | 
| return undefined; | 
|  |