setVRFieldOfView(fieldOfView) {
    goog.asserts.assert(this.vr_ != null, 'Should have a VR manager!');
    this.vr_.setFieldOfView(fieldOfView);
  }
Changing the field of view increases or decreases the portion of the video
that is viewed at one time. If the field of view is decreased, a small
part of the video will be seen, but with more detail. If the field of view
is increased, a larger part of the video will be seen, but with less
detail.

@param {number} fieldOfView In degrees
@export