title: Play Youtube Video in Cardboard mode
body: <p>I'm developing a cardboard app. In my app I want to play a 360 youtube video, I want it to go straight to VR mode so the user doesn't have to remove their headset.</p>
  <p>I don't mind whether this video is embedded in my app or opens the youtube app, but I need it go directly into VR mode with no non-VR interaction.</p>
  <p>I've looked into doing the following:</p>
  <ul>
  <li>streaming the video onto a surfaceTexture and using this to render stereoscoptically: <a href="https://stackoverflow.com/questions/19273437/android-draw-youtube-video-on-surfacetexture">not Possible</a></li>
  <li>Launching the youtube app in cardboard mode: <a href="https://productforums.google.com/forum/#!topic/youtube/FPZvA0fDZt0" rel="nofollow noreferrer">Not Possible</a></li>
  <li>Using the YoutubePlayerView/Fragment/standalonePlayer : None expose functions to enable cardboard mode.</li>
  </ul>
  <p>Is this possible?</p>