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