Lazily install origin trial features on V8 objects

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

 {% filter format_blink_cpp_source_code %}
 
 {% include 'copyright_block.txt' %}
 #ifndef {{v8_class_or_partial}}_h
 #define {{v8_class_or_partial}}_h
 
 {% for filename in header_includes %}
 #include "{{filename}}"
 {% endfor %}
 
@@ skipping 16 matching lines @@
     {% if attribute.has_custom_setter %}{# FIXME: and not attribute.implemented_by #}
     static void {{attribute.name}}AttributeSetterCustom(v8::Local<v8::Value>, const v8::PropertyCallbackInfo<void>&);
     {% endif %}
     {% endfor %}
     {% if unscopables or has_conditional_attributes_on_prototype or
           methods | conditionally_exposed(is_partial) %}
     static void preparePrototypeAndInterfaceObject(v8::Local<v8::Context>, const DOMWrapperWorld&, v8::Local<v8::Object>, v8::Local<v8::Function>, v8::Local<v8::FunctionTemplate>);
     {% endif %}
     {% for origin_trial_feature in origin_trial_features %}{{newline}}
     static void install{{origin_trial_feature.name}}(ScriptState*, v8::Local<v8::Object> instance);
+    static void install{{origin_trial_feature.name}}(v8::Isolate*, const DOMWrapperWorld&, v8::Local<v8::Object> instance, v8::Local<v8::Object> prototype, v8::Local<v8::Function> interface);
     {% if not origin_trial_feature.needs_instance %}
     static void install{{origin_trial_feature.name}}(ScriptState*);
     {% endif %}
     {% endfor %}
 private:
     static void install{{v8_class}}Template(v8::Isolate*, const DOMWrapperWorld&, v8::Local<v8::FunctionTemplate> interfaceTemplate);
 };
 }
 #endif // {{v8_class_or_partial}}_h
 
 {% endfilter %}{# format_blink_cpp_source_code #}