title: Typescript HTML5 API Typings
body: <p>Anyone know if there exists type definitions for the HTML5 File API?  Specifically:</p>
  
  <ul>
  <li>FileList</li>
  <li>File</li>
  <li>Blob</li>
  <li>FileReader</li>
  </ul>
  
  <p>Also in Angular there is a <code>document.defaultView</code> object that represents the window, but it does not the full Window interface with respect to the Html5 File API, so it would be necessary to cast <code>document.defaultView</code> to an instance that has the <code>Window</code> interface for the file API.</p>