[Bindings][Refactoring] Remove attribute filters from .tmpl files

third_party/WebKit/Source/bindings/templates/interface.h.tmpl

 {% filter format_blink_cpp_source_code %}
 
 {% include 'copyright_block.txt' %}
 #ifndef {{v8_class}}_h
 #define {{v8_class}}_h
 
 {% for filename in header_includes %}
 #include "{{filename}}"
 {% endfor %}
 
 namespace blink {
 
 {% if has_event_constructor %}
 class Dictionary;
 {% endif %}
-{% if attributes|origin_trial_enabled_attributes %}
+{% if origin_trial_attributes %}
 class ScriptState;
 {% endif %}
 {% if named_constructor %}
 class {{v8_class}}Constructor {
   STATIC_ONLY({{v8_class}}Constructor);
  public:
   static v8::Local<v8::FunctionTemplate> domTemplate(v8::Isolate*, const DOMWrapperWorld&);
   static const WrapperTypeInfo wrapperTypeInfo;
 };
 
@@ skipping 159 matching lines @@
 template <>
 struct V8TypeOf<{{cpp_class}}> {
   typedef {{v8_class}} Type;
 };
 
 }  // namespace blink
 
 #endif  // {{v8_class}}_h
 
 {% endfilter %}{# format_blink_cpp_source_code #}