General: Introduce a wp_is_mobile filter for controlling whether a request should be treated as coming from a mobile device.

Props PressLabs

Fixes #41023

Built from https://develop.svn.wordpress.org/trunk@40907


git-svn-id: http://core.svn.wordpress.org/trunk@40757 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/vars.php

@@ -139,5 +139,12 @@ function wp_is_mobile() {
 		$is_mobile = false;
 	}
 
-	return $is_mobile;
+	/**
+	 * Filters whether the request should be treated as coming from a mobile device or not.
+	 *
+	 * @since 4.9.0
+	 *
+	 * @param bool $is_mobile Whether the request is from a mobile device or not.
+	 */
+	return apply_filters( 'wp_is_mobile', $is_mobile );
 }