bindings: Adds virtual ScriptWrappable::wrap method.

Source/bindings/templates/interface.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file has been auto-generated by {{code_generator}}. DO NOT MODIFY!
 
 #ifndef {{v8_class}}_h
 #define {{v8_class}}_h
 
 {% filter conditional(conditional_string) %}
@@ skipping 202 matching lines @@
 {% else %}{# has_custom_to_v8 #}
 v8::Handle<v8::Object> wrap({{cpp_class}}* impl, v8::Handle<v8::Object> creationContext, v8::Isolate*);
 
 inline v8::Handle<v8::Value> toV8({{cpp_class}}* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     if (UNLIKELY(!impl))
         return v8::Null(isolate);
     v8::Handle<v8::Value> wrapper = DOMDataStore::getWrapper<{{v8_class}}>(impl, isolate);
     if (!wrapper.IsEmpty())
         return wrapper;
+
+{% if is_script_wrappable %}
+    return impl->wrap(creationContext, isolate);
+{% else %}
     return wrap(impl, creationContext, isolate);
+{% endif %}
 }
 
 template<typename CallbackInfo>
 inline void v8SetReturnValue(const CallbackInfo& callbackInfo, {{cpp_class}}* impl)
 {
     if (UNLIKELY(!impl)) {
         v8SetReturnValueNull(callbackInfo);
         return;
     }
     if (DOMDataStore::setReturnValueFromWrapper<{{v8_class}}>(callbackInfo.GetReturnValue(), impl))
@@ skipping 53 matching lines @@
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
 {% if has_event_constructor %}
 bool initialize{{cpp_class}}({{cpp_class}}Init&, const Dictionary&, ExceptionState&, const v8::FunctionCallbackInfo<v8::Value>& info, const String& = "");
 
 {% endif %}
 } // namespace blink
 {% endfilter %}
 #endif // {{v8_class}}_h