**Do you want to request a *feature* or report a *bug*?**

Bug

**What is the current behavior?**

Consider the following code:

```js
const forwardRefComponentLike = function forwardRefComponentLike(_props, _ref) {
  return <span>FowardRef</span>;
};

const FowardRefComponent = React.forwardRef(forwardRefComponentLike, {});

const MemoOfFowardRefComponent = React.memo(FowardRefComponent);
```

The `MemoOfFowardRefComponent` component does not pick up the name of the ForwardRefComponent and is instead rendered in devtools as:

```
 Anonymous [Memo]
    forwardRefComponentLike [ForwardRef]
```

<img width="262" alt="Screen Shot 2019-09-09 at 10 45 02 PM" src="https://user-images.githubusercontent.com/227292/64587241-81816d00-d353-11e9-8f20-873aa00f5076.png">

See this codesandbox for a demo and a comparison of how React.memo handles regular functional components: https://codesandbox.io/s/react-forwardref-and-memo-combo-33vx7

**What is the expected behavior?**

I would expect this to pick up the name of the thing passed into React.Memo, as happens for regular components

```
forwardRefComponentLike [Memo]
```

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

Tested with React 16.9.0.
if ((node.effectTag & Placement) !== NoEffect) {
          return MOUNTING;
        }
      }
    } else {
      while (node.return) {
        node = node.return;
      }
    }
    if (node.tag === HostRoot) {
       T
       r
      return MOUNTED;
    }
     I
     t
    return UNMOUNTED;
  }
   This function is copied from React and should be kept in sync:
   https:github.com/facebook/react/blob/master/packages/react-reconciler/src/ReactFiberTreeReflection.js
   It would be nice if we updated React to inject this function directly (vs just indirectly via findDOMNode).
   BEGIN copied code
  function findCurrentFiberUsingSlowPathById(id: number): Fiber | null {
    const fiber = idToFiberMap.get(id);
    if (fiber == null) {
      console.warn(`Could not find Fiber with id "${id}"`);
      return null;
    }
    let alternate = fiber.alternate;
    if (!alternate) {