First cut of JS closure compiler use for VR HTML UI.

chrome/browser/resources/vr_shell/vr_shell_ui_scene.js

Index: chrome/browser/resources/vr_shell/vr_shell_ui_scene.js
diff --git a/chrome/browser/resources/vr_shell/vr_shell_ui_scene.js b/chrome/browser/resources/vr_shell/vr_shell_ui_scene.js
index a83ef30ea09ca787a67c6ac658469cb65ab024e5..e87deaca8ce92e18d4dd98895dc1ec3b4e3cf8d1 100644
--- a/chrome/browser/resources/vr_shell/vr_shell_ui_scene.js
+++ b/chrome/browser/resources/vr_shell/vr_shell_ui_scene.js
@@ -80,7 +80,7 @@ var ui = (function() {
       update.id = id;
       this.commands.push({
         'type': api.Command.UPDATE_ELEMENT,
-        'data': update
+        'data': update.properties
       });
     }
 
@@ -133,7 +133,7 @@ var ui = (function() {
     purge() {
       var ids = Object.keys(this.animations);
       for (let id_key of ids) {
-        var id = parseInt(id_key);
+        var id = parseInt(id_key, 10);
         this.removeAnimation(id);
       }
       var ids = this.elements.values();