Remove TraceWrappers idl attribute

third_party/WebKit/Source/bindings/templates/interface.cpp

Index: third_party/WebKit/Source/bindings/templates/interface.cpp
diff --git a/third_party/WebKit/Source/bindings/templates/interface.cpp b/third_party/WebKit/Source/bindings/templates/interface.cpp
index 4d3ec2207201e10775edc82e4de954f4857b6acb..f153bd5e7f8c5f36c116e43647a309ec03d91406 100644
--- a/third_party/WebKit/Source/bindings/templates/interface.cpp
+++ b/third_party/WebKit/Source/bindings/templates/interface.cpp
@@ -535,22 +535,6 @@ static void constructor(const v8::FunctionCallbackInfo<v8::Value>& info)
 {% endblock %}
 
 {##############################################################################}
-
-{% block trace_wrappers %}
-{% if trace_wrappers %}
-DEFINE_TRACE_WRAPPERS({{cpp_class_or_partial}})
-{
-    {% for traceable in trace_wrappers %}
-    visitor->traceWrappers({{traceable}}());
-    {% endfor %}
-    {% if parent_interface %}
-    {{parent_interface}}::traceWrappers(visitor);
-    {% endif %}
-}
-{% endif %}
-{% endblock %}
-
-{##############################################################################}
 {% block visit_dom_wrapper %}
 {% if set_wrapper_reference_from or set_wrapper_reference_to %}
 void {{v8_class}}::visitDOMWrapper(v8::Isolate* isolate, ScriptWrappable* scriptWrappable, const v8::Persistent<v8::Object>& wrapper)