| Index: tracing/tracing/ui/base/container_that_decorates_its_children.html | 
| diff --git a/tracing/tracing/ui/base/container_that_decorates_its_children.html b/tracing/tracing/ui/base/container_that_decorates_its_children.html | 
| index 0ee972ef03ea0d5dea1da4066b9eef3da08ca4bc..015179c031718d18cd4c90c4a71605b8f343e4c2 100644 | 
| --- a/tracing/tracing/ui/base/container_that_decorates_its_children.html | 
| +++ b/tracing/tracing/ui/base/container_that_decorates_its_children.html | 
| @@ -62,7 +62,8 @@ tr.exportTo('tr.ui.b', function() { | 
|  | 
| clear: function() { | 
| while (this.lastChild) | 
| -        HTMLDivElement.prototype.removeChild.call(this, this.lastChild); | 
| +        HTMLDivElement.prototype.removeChild.call( | 
| +            this, Polymer.dom(this).lastChild); | 
| this.didMutate_(this.observer_.takeRecords()); | 
| }, | 
|  | 
|  |