Wrapper Tracing Reference

Wrapper tracing is deprecated and not in use anymore. Blink uses unified heap these days which just relies on regular Oilpan types for C++.

In case you are looking for how to keep JavaScript wrapper alive from C++ using tracing use the following:

• Use Member<T> for any managed pointer, independent of whether a JavaScript object is transitively reachable or not. With wrapper tracing interesting references required manually annotating with TraceWrapperMember<T>. This is not needed anymore; in fact, the type does not exist anymore.
• Use TraceWrapperV8Reference<T> to annotate references to V8 that this object should keep alive.