Bindings: Make interface operation (method) properties configurable

Source/bindings/core/v8/V8DOMConfiguration.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 231 matching lines @@
         v8::Local<v8::ObjectTemplate> prototype = functionDescriptor->PrototypeTemplate();
         prototype->SetInternalFieldCount(v8PrototypeInternalFieldcount);
     }
 
     v8::Local<v8::Signature> defaultSignature = v8::Signature::New(isolate, functionDescriptor);
     if (attributeCount)
         installAttributes(isolate, instanceTemplate, functionDescriptor->PrototypeTemplate(), attributes, attributeCount);
     if (accessorCount)
         installAccessors(isolate, functionDescriptor->PrototypeTemplate(), defaultSignature, accessors, accessorCount);
     if (callbackCount)
-        installMethods(isolate, functionDescriptor->PrototypeTemplate(), defaultSignature, static_cast<v8::PropertyAttribute>(v8::DontDelete), callbacks, callbackCount);
+        installMethods(isolate, functionDescriptor->PrototypeTemplate(), defaultSignature, static_cast<v8::PropertyAttribute>(v8::None), callbacks, callbackCount);
     return defaultSignature;
 }
 
 v8::Handle<v8::FunctionTemplate> V8DOMConfiguration::domClassTemplate(v8::Isolate* isolate, WrapperTypeInfo* wrapperTypeInfo, void (*configureDOMClassTemplate)(v8::Local<v8::FunctionTemplate>, v8::Isolate*))
 {
     V8PerIsolateData* data = V8PerIsolateData::from(isolate);
     v8::Local<v8::FunctionTemplate> result = data->existingDOMTemplate(wrapperTypeInfo);
     if (!result.IsEmpty())
         return result;
 
     TRACE_EVENT_SCOPED_SAMPLING_STATE("blink", "BuildDOMTemplate");
     result = v8::FunctionTemplate::New(isolate, V8ObjectConstructor::isValidConstructorMode);
     configureDOMClassTemplate(result, isolate);
     data->setDOMTemplate(wrapperTypeInfo, result);
     return result;
 }
 
 } // namespace blink