title: WebView media content stops when the screen is locked ( activity's onStop is called)
body: <p>I have an App that plays a video inside a <code>WebView</code> on my MainActivity. The problem I am having is that the video is pausing whenever I lock the screen (Activity's <code>onStop</code> is called, that is when the video in the <code>WebView</code> is paused).</p>
  
  <p>But this behavior only occurs on <strong>Apis >= Lollipop(5.0)</strong>.</p>
  
  <p>I searched everywhere for a solution, but I could not find anything. I just want the video to keep playing even when the user is on LockScreen.</p>