Merge pull request #282 from googlevr/revert-278-iframe-vr-feature-policy

Revert "Add 'allow="vr"' Feature Policy attribute to iframe to permit WebVR"

Author: lincolnfrog

src/api/player.js

@@ -163,7 +163,6 @@ Player.prototype.createIframe_ = function(contentInfo) {
   var iframe = document.createElement('iframe');
   iframe.setAttribute('allowfullscreen', true);
   iframe.setAttribute('scrolling', 'no');
-  iframe.setAttribute('allow', 'vr');
   iframe.style.border = 0;
 
   // Handle iframe size if width and height are specified.