One polymer_config.js to rule them all.

R=michaelpg@chromium.org,fukino@chromium.org,mfoltz@chromium.org
BUG=425626

Review URL: https://codereview.chromium.org/1224783005

Cr-Commit-Position: refs/heads/master@{#337882}
bool OobeUI::IsJSReady(const base::Closure& display_is_ready_callback) {
  if (!ready_)
    ready_callbacks_.push_back(display_is_ready_callback);
  return ready_;
}

bool OobeUI::IsJSReady(const base::Closure& display_is_ready_callback) {
  if (!ready_)
    ready_callbacks_.push_back(display_is_ready_callback);
  return ready_;
}
