wp admin bar

// https://codex.wordpress.org/Function_Reference/remove_meta_box
function remove_dashboard_widgets(){
     remove_meta_box('menu-plugins', 'dashboard', 'normal');   // Plugins
}
add_action('wp_dashboard_setup', 'remove_dashboard_widgets');

// https://codex.wordpress.org/Plugin_API/Action_Reference/wp_before_admin_bar_render
//https://core.trac.wordpress.org/browser/tags/4.4.2/src/wp-includes/admin-bar.php#L88
function firoze_wp_admin_bar(){
	global $wp_admin_bar;
    $wp_admin_bar -> add_menu(

			array(
				'id'=>'google_analytics',
				'title'=>'Google Analytics',
				'href'=>'http://google.com/analytics',
				'target'=>true
				)
		);
    $wp_admin_bar -> add_menu(

			array(
				'id'=>'facebook_analytics',
				'title'=>'Facebook Analytics',
				'href'=>'http://facebook.com',
				'target'=>true
			)
		);

}
add_action('wp_before_admin_bar_render', 'firoze_wp_admin_bar');
// add_action( 'admin_bar_menu', 'firoze_wp_admin_bar' );