Function mozjs::jsapi::GetSavedFrameParent

pub unsafe extern "C" fn GetSavedFrameParent(
    cx: *mut JSContext,
    principals: *mut JSPrincipals,
    savedFrame: Handle<*mut JSObject>,
    parentp: MutableHandle<*mut JSObject>,
    selfHosted: SavedFrameSelfHosted
) -> SavedFrameResult

Given a SavedFrame JSObject, get its parent SavedFrame object or nullptr if it is the oldest frame in the stack. The parentp out parameter is NOT guaranteed to be in the cx’s compartment. Defaults to nullptr.