PreventExtensions  587 src/bootstrapper.cc     JSObject::PreventExtensions(throw_type_error_function);
PreventExtensions 3944 src/objects.cc   CALL_HEAP_FUNCTION(object->GetIsolate(), object->PreventExtensions(), Object);
PreventExtensions 3962 src/objects.cc     return JSObject::cast(proto)->PreventExtensions();
PreventExtensions 2044 src/objects.h    static Handle<Object> PreventExtensions(Handle<JSObject> object);
PreventExtensions 2045 src/objects.h    MUST_USE_RESULT MaybeObject* PreventExtensions();
PreventExtensions 1225 src/runtime.cc   return obj->PreventExtensions();
PreventExtensions   76 src/runtime.h    F(PreventExtensions, 1, 1)\
PreventExtensions 1384 src/scopes.cc      USE(JSObject::PreventExtensions(instance));