Have bindings layer assume and insist that all interface types are GCed.

third_party/WebKit/Source/bindings/tests/results/core/V8TestSpecialOperations.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_v8.py. DO NOT MODIFY!
 
 #ifndef V8TestSpecialOperations_h
 #define V8TestSpecialOperations_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
@@ skipping 12 matching lines @@
 public:
     CORE_EXPORT static bool hasInstance(v8::Local<v8::Value>, v8::Isolate*);
     static v8::Local<v8::Object> findInstanceInPrototypeChain(v8::Local<v8::Value>, v8::Isolate*);
     CORE_EXPORT static v8::Local<v8::FunctionTemplate> domTemplate(v8::Isolate*);
     static TestSpecialOperations* toImpl(v8::Local<v8::Object> object)
     {
         return toScriptWrappable(object)->toImpl<TestSpecialOperations>();
     }
     CORE_EXPORT static TestSpecialOperations* toImplWithTypeCheck(v8::Isolate*, v8::Local<v8::Value>);
     CORE_EXPORT static const WrapperTypeInfo wrapperTypeInfo;
-    static void refObject(ScriptWrappable*);
-    static void derefObject(ScriptWrappable*);
     template<typename VisitorDispatcher>
     static void trace(VisitorDispatcher visitor, ScriptWrappable* scriptWrappable)
     {
+        visitor->trace(scriptWrappable->toImpl<TestSpecialOperations>());
     }
     static const int internalFieldCount = v8DefaultWrapperInternalFieldCount + 0;
     static void installConditionallyEnabledProperties(v8::Local<v8::Object>, v8::Isolate*) { }
     static void preparePrototypeAndInterfaceObject(v8::Local<v8::Context>, v8::Local<v8::Object> prototypeObject, v8::Local<v8::Function> interfaceObject, v8::Local<v8::FunctionTemplate> interfaceTemplate) { }
 };
 
 template <>
 struct V8TypeOf<TestSpecialOperations> {
     typedef V8TestSpecialOperations Type;
 };
 
 } // namespace blink
 
 #endif // V8TestSpecialOperations_h