message: get rid of lockOrigin backwards compatibility
diff: @@ -42,7 +42,7 @@ function remoteSetTint(event) {
  }
  window.onmessage = function(e) {
  - if (lockOrigin === undefined || e.origin === lockOrigin) {
  + if (e.origin === lockOrigin) {
  if (e.data.blob) remoteRender(e);
  else remoteSetTint(e);
  }
  