IDL compiler: [MeasureAs] for setters

Source/bindings/templates/attributes.cpp

 {##############################################################################}
 {% macro attribute_getter(attribute, world_suffix) %}
 {% filter conditional(attribute.conditional_string) %}
 static void {{attribute.name}}AttributeGetter{{world_suffix}}(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     {% if attribute.is_unforgeable %}
     v8::Handle<v8::Object> holder = info.This()->FindInstanceInPrototypeChain({{v8_class_name}}::GetTemplate(info.GetIsolate(), worldType(info.GetIsolate())));
     if (holder.IsEmpty())
         return;
     {{cpp_class_name}}* imp = {{v8_class_name}}::toNative(holder);
@@ skipping 137 matching lines @@
 
 {##############################################################################}
 {% macro attribute_setter_callback(attribute, world_suffix) %}
 {% filter conditional(attribute.conditional_string) %}
 static void {{attribute.name}}AttributeSetterCallback{{world_suffix}}(v8::Local<v8::String> name, v8::Local<v8::Value> jsValue, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
     {% if attribute.deprecate_as %}
     UseCounter::countDeprecation(activeExecutionContext(), UseCounter::{{attribute.deprecate_as}});
     {% endif %}
+    {% if attribute.measure_as %}
+    UseCounter::count(activeDOMWindow(), UseCounter::{{attribute.measure_as}});
+    {% endif %}
     {% if world_suffix in attribute.activity_logging_world_list_for_setter %}
     V8PerContextData* contextData = V8PerContextData::from(info.GetIsolate()->GetCurrentContext());
     if (contextData && contextData->activityLogger()) {
         v8::Handle<v8::Value> loggerArg[] = { jsValue };
         contextData->activityLogger()->log("{{interface_name}}.{{attribute.name}}", 1, &loggerArg[0], "Setter");
     }
     {% endif %}
     {% if attribute.has_custom_setter %}
     {{v8_class_name}}::{{attribute.name}}AttributeSetterCustom(name, jsValue, info);
     {% else %}
     {{cpp_class_name}}V8Internal::{{attribute.name}}AttributeSetter{{world_suffix}}(name, jsValue, info);
     {% endif %}
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "Execution");
 }
 {% endfilter %}
 {% endmacro %}