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.)

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Originally reported via https://github.com/bvaughn/react-devtools-experimental/issues/365
const {children, id, isCollapsed} = element;
  const toggleCollapsed = event => {
    event.preventDefault();
    event.stopPropagation();
    store.toggleIsCollapsed(id, !isCollapsed);
  };
  const stopPropagation = event => {
    
    event.stopPropagation();
  };
  if (children.length === 0) {
    return <div className={styles.ExpandCollapseToggle} />;
  }
  return (
    <div
      className={styles.ExpandCollapseToggle}
      onMouseDown={stopPropagation}
      onClick={toggleCollapsed}
      onDoubleClick={swallowDoubleClick}>
      <ButtonIcon type={isCollapsed ? 'collapsed' : 'expanded'} />
    </div>
  );
}
type DisplayNameProps = {|
  displayName: string | null,
  id: number,
|};
function DisplayName({displayName, id}: DisplayNameProps) {
  const {searchIndex, searchResults, searchText} = useContext(TreeStateContext);
  const isSearchResult = useMemo(() => {