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

third_party/WebKit/Source/bindings/tests/results/core/V8TestCallbackInterface.cpp

 // 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!
 
 #include "V8TestCallbackInterface.h"
 
 #include "bindings/core/v8/ScriptController.h"
 #include "bindings/core/v8/V8Binding.h"
@@ skipping 66 matching lines @@
     if (boolArgHandle.IsEmpty()) {
         if (!isScriptControllerTerminating())
             CRASH();
         return;
     }
     v8::Local<v8::Value> argv[] = { boolArgHandle };
 
     ScriptController::callFunction(m_scriptState->getExecutionContext(), m_callback.newLocal(m_scriptState->isolate()), v8::Undefined(m_scriptState->isolate()), 1, argv, m_scriptState->isolate());
 }
 
-void V8TestCallbackInterface::voidMethodSequenceArg(const Vector<RefPtr<TestInterfaceEmpty>>& sequenceArg)
+void V8TestCallbackInterface::voidMethodSequenceArg(const HeapVector<Member<TestInterfaceEmpty>>& sequenceArg)
 {
     if (!canInvokeCallback())
         return;
 
     if (!m_scriptState->contextIsValid())
         return;
 
     ScriptState::Scope scope(m_scriptState.get());
     v8::Local<v8::Value> sequenceArgHandle = toV8(sequenceArg, m_scriptState->context()->Global(), m_scriptState->isolate());
     if (sequenceArgHandle.IsEmpty()) {
@@ skipping 92 matching lines @@
         if (!isScriptControllerTerminating())
             CRASH();
         return;
     }
     v8::Local<v8::Value> argv[] = { stringArgHandle };
 
     ScriptController::callFunction(m_scriptState->getExecutionContext(), m_callback.newLocal(m_scriptState->isolate()), thisHandle, 1, argv, m_scriptState->isolate());
 }
 
 } // namespace blink