If you have `memo(forwardRef(X))`, then the inner component won't have a "rendered by" list. This is because it technically doesn't have an owner. It is artificial.

I think we should ideally set up `_debugOwner` for these Fibers in DEV just so existing tooling can find them. Or special case them in DevTools.
.TreeContextController;
  });
  const Contexts = ({children, defaultOwnerID = null}) => (
    <BridgeContext.Provider value={bridge}>
      <StoreContext.Provider value={store}>
        <TreeContextController defaultOwnerID={defaultOwnerID}>
          <OwnersListContextController>{children}</OwnersListContextController>
        </TreeContextController>
      </StoreContext.Provider>
    </BridgeContext.Provider>
  );
  it('should fetch the owners list for the selected element', async done => {
    const Grandparent = () => <Parent />;
    const Parent = () => {
      return (
        <React.Fragment>
          <Child />
          <Child />
        </React.Fragment>
      );
    };
    const Child = () => null;
    utils.act(() =>
      ReactDOM.render(<Grandparent />, document.createElement('div')),
    );
    expect(store).toMatchSnapshot('mount');
    const parent = ((store.getElementAtIndex(1): any): Element);
    const firstChild = ((store.getElementAtIndex(2): any): Element);
    let didFinish = false;
    function Suspender({owner}) {