message: Searchbox Enter is to clear, tabbing to clear button doesn't work, remove it
diff: @@ -133,7 +133,9 @@ module.exports = createReactClass({
  return null;
  }
  const clearButton = (!this.state.blurred || this.state.searchTerm) ?
  - (<AccessibleButton key="button"
  + (<AccessibleButton
  + key="button"
  + tabIndex={-1}
  className="mx_SearchBox_closeButton"
  onClick={ () => {this._clearSearch("button"); } }>
  </AccessibleButton>) : undefined;
  