Building on top of #360

We could probably improve the search UX in a couple of ways:

* Visually indicate when the "match" is because of a HOC name, e.g.
<img width="161" alt="Screen Shot 2019-08-03 at 1 54 21 PM" src="https://user-images.githubusercontent.com/29597/62416804-36f32f00-b5f6-11e9-9150-e32f652c7f98.png">

* Match built-in HOC types (e.g. searching "me" should match `React.memo` HOCs, searching "f" should match `React.forwardRef`, etc.)

---
Originally reported via https://github.com/bvaughn/react-devtools-experimental/issues/365
if (typeof type === 'string') {
        return type;
      } else if (type != null) {
        return getDisplayName(type, 'Anonymous');
      } else {
        return 'Element';
      }
  }
}
const MAX_PREVIEW_STRING_LENGTH = 50;
function truncateForDisplay(
  string: string,
  length: number = MAX_PREVIEW_STRING_LENGTH,
) {
  if (string.length > length) {
    return string.substr(0, length) + '…';
  } else {
    return string;
  }
}
 Attempts to mimic Chrome's inline preview for values.
 For example, the following value...
   {
      foo: 123,
      bar: "abc",
      baz: [true, false],
      qux: { ab: 1, cd: 2 }
   };
 Would show a preview of...
   {foo: 123, bar: "abc", baz: Array(2), qux: {…}}