| 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 11ed53a5fda8a7cb8ced6075b154f7b608fec8eb..9d48244865d6cd4e45900ea381c74dfdec83095b 100644 | 
| --- a/tracing/tracing/ui/base/container_that_decorates_its_children.html | 
| +++ b/tracing/tracing/ui/base/container_that_decorates_its_children.html | 
| @@ -34,6 +34,7 @@ tr.exportTo('tr.ui.b', function() { | 
| { get: undefined, set: this.onSetTextContent_}); | 
| }, | 
|  | 
| +    // TODO(polymer): Do we need to use Polymer.dom on these functions? | 
| appendChild: function(x) { | 
| HTMLUnknownElement.prototype.appendChild.call(this, x); | 
| this.didMutate_(this.observer_.takeRecords()); | 
|  |