Index: src/wp-includes/default-constants.php
===================================================================
--- src/wp-includes/default-constants.php	(revision 42215)
+++ src/wp-includes/default-constants.php	(working copy)
@@ -240,6 +240,20 @@
 		define('LOGGED_IN_COOKIE', 'wordpress_logged_in_' . COOKIEHASH);
 
 	/**
+	 * @since 4.9.2
+	 */
+	if ( ! defined( 'SETTINGS_COOKIE' ) ) {
+		define( 'SETTINGS_COOKIE', 'wp-settings-' );
+	}
+
+	/**
+	 * @since 4.9.2
+	 */
+	if ( ! defined( 'SETTINGS_TIME_COOKIE' ) ) {
+		define( 'SETTINGS_TIME_COOKIE', 'wp-settings-time-' );
+	}
+
+	/**
 	 * @since 2.3.0
 	 */
 	if ( !defined('TEST_COOKIE') )
Index: src/wp-includes/js/utils.js
===================================================================
--- src/wp-includes/js/utils.js	(revision 42215)
+++ src/wp-includes/js/utils.js	(working copy)
@@ -157,7 +157,7 @@
 	}
 
 	var uid = userSettings.uid,
-		settings = wpCookies.getHash( 'wp-settings-' + uid ),
+		settings = wpCookies.getHash( userSettings.settingsCookie + uid ),
 		path = userSettings.url,
 		secure = !! userSettings.secure;
 
@@ -177,8 +177,8 @@
 		settings[name] = value;
 	}
 
-	wpCookies.setHash( 'wp-settings-' + uid, settings, 31536000, path, '', secure );
-	wpCookies.set( 'wp-settings-time-' + uid, userSettings.time, 31536000, path, '', secure );
+	wpCookies.setHash( userSettings.settingsCookie + uid, settings, 31536000, path, '', secure );
+	wpCookies.set( userSettings.settingsTimeCookie + uid, userSettings.time, 31536000, path, '', secure );
 
 	return name;
 }
Index: src/wp-includes/option.php
===================================================================
--- src/wp-includes/option.php	(revision 42215)
+++ src/wp-includes/option.php	(working copy)
@@ -896,8 +896,8 @@
 
 	$settings = (string) get_user_option( 'user-settings', $user_id );
 
-	if ( isset( $_COOKIE['wp-settings-' . $user_id] ) ) {
-		$cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user_id] );
+	if ( isset( $_COOKIE[ SETTINGS_COOKIE . $user_id ] ) ) {
+		$cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE[ SETTINGS_COOKIE . $user_id ] );
 
 		// No change or both empty
 		if ( $cookie == $settings )
@@ -904,7 +904,7 @@
 			return;
 
 		$last_saved = (int) get_user_option( 'user-settings-time', $user_id );
-		$current = isset( $_COOKIE['wp-settings-time-' . $user_id]) ? preg_replace( '/[^0-9]/', '', $_COOKIE['wp-settings-time-' . $user_id] ) : 0;
+		$current = isset( $_COOKIE[ SETTINGS_TIME_COOKIE . $user_id ] ) ? preg_replace( '/[^0-9]/', '', $_COOKIE[ SETTINGS_TIME_COOKIE . $user_id ] ) : 0;
 
 		// The cookie is newer than the saved value. Update the user_option and leave the cookie as-is
 		if ( $current > $last_saved ) {
@@ -916,9 +916,9 @@
 
 	// The cookie is not set in the current browser or the saved value is newer.
 	$secure = ( 'https' === parse_url( admin_url(), PHP_URL_SCHEME ) );
-	setcookie( 'wp-settings-' . $user_id, $settings, time() + YEAR_IN_SECONDS, SITECOOKIEPATH, null, $secure );
-	setcookie( 'wp-settings-time-' . $user_id, time(), time() + YEAR_IN_SECONDS, SITECOOKIEPATH, null, $secure );
-	$_COOKIE['wp-settings-' . $user_id] = $settings;
+	setcookie( SETTINGS_COOKIE . $user_id, $settings, time() + YEAR_IN_SECONDS, SITECOOKIEPATH, null, $secure );
+	setcookie( SETTINGS_TIME_COOKIE . $user_id, time(), time() + YEAR_IN_SECONDS, SITECOOKIEPATH, null, $secure );
+	$_COOKIE[ SETTINGS_COOKIE . $user_id ] = $settings;
 }
 
 /**
@@ -1017,8 +1017,8 @@
 
 	$user_settings = array();
 
-	if ( isset( $_COOKIE['wp-settings-' . $user_id] ) ) {
-		$cookie = preg_replace( '/[^A-Za-z0-9=&_-]/', '', $_COOKIE['wp-settings-' . $user_id] );
+	if ( isset( $_COOKIE[ SETTINGS_COOKIE . $user_id ] ) ) {
+		$cookie = preg_replace( '/[^A-Za-z0-9=&_-]/', '', $_COOKIE[ SETTINGS_COOKIE . $user_id ] );
 
 		if ( strpos( $cookie, '=' ) ) { // '=' cannot be 1st char
 			parse_str( $cookie, $user_settings );
@@ -1088,7 +1088,7 @@
 	}
 
 	update_user_option( $user_id, 'user-settings', '', false );
-	setcookie( 'wp-settings-' . $user_id, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH );
+	setcookie( SETTINGS_COOKIE . $user_id, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH );
 }
 
 /**
Index: src/wp-includes/pluggable.php
===================================================================
--- src/wp-includes/pluggable.php	(revision 42215)
+++ src/wp-includes/pluggable.php	(working copy)
@@ -953,8 +953,8 @@
 	setcookie( LOGGED_IN_COOKIE,   ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH,      COOKIE_DOMAIN );
 
 	// Settings cookies
-	setcookie( 'wp-settings-' . get_current_user_id(),      ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH );
-	setcookie( 'wp-settings-time-' . get_current_user_id(), ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH );
+	setcookie( SETTINGS_COOKIE . get_current_user_id(),      ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH );
+	setcookie( SETTINGS_TIME_COOKIE . get_current_user_id(), ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH );
 
 	// Old cookies
 	setcookie( AUTH_COOKIE,        ' ', time() - YEAR_IN_SECONDS, COOKIEPATH,     COOKIE_DOMAIN );
Index: src/wp-includes/script-loader.php
===================================================================
--- src/wp-includes/script-loader.php	(revision 42215)
+++ src/wp-includes/script-loader.php	(working copy)
@@ -73,6 +73,8 @@
 		'uid' => (string) get_current_user_id(),
 		'time' => (string) time(),
 		'secure' => (string) ( 'https' === parse_url( site_url(), PHP_URL_SCHEME ) ),
+		'settingsCookie' => (string) SETTINGS_COOKIE,
+		'settingsTimeCookie' => (string) SETTINGS_TIME_COOKIE,
 	) );
 
 	$scripts->add( 'common', "/wp-admin/js/common$suffix.js", array('jquery', 'hoverIntent', 'utils'), false, 1 );