Hi. Here is lines 70 – 80:
$this->user->active_blog = get_active_blog_for_user( get_current_user_id() );
$this->user->domain = empty( $this->user->active_blog ) ? user_admin_url() : trailingslashit( get_home_url( $this->user->active_blog->blog_id ) );
$this->user->account_domain = $this->user->domain;
} else {
$this->user->active_blog = $this->user->blogs[get_current_blog_id()];
$this->user->domain = trailingslashit( home_url() );
$this->user->account_domain = $this->user->domain;
}
$this->user->locale = get_locale();
add_action( 'wp_head', 'wp_admin_bar_header' );