void Shell::SetDisplayWorkAreaInsets(Window* contains,
                                     const gfx::Insets& insets) {
  if (!window_tree_host_manager_->UpdateWorkAreaOfDisplayNearestWindow(
          contains, insets)) {
    return;
  }
  FOR_EACH_OBSERVER(ShellObserver, observers_,
                    OnDisplayWorkAreaInsetsChanged());
}

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