Add upstream

wp-content/plugins/jetpack/_inc/lib/debugger/0-load.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * Loading the various functions used for Jetpack Debugging.
+ *
+ * @package Jetpack.
+ */
+
+global $wp_version;
+
+/* Jetpack Connection Testing Framework */
+require_once 'class-jetpack-cxn-test-base.php';
+/* Jetpack Connection Tests */
+require_once 'class-jetpack-cxn-tests.php';
+/* Jetpack Debug Data */
+require_once 'class-jetpack-debug-data.php';
+/* The "In-Plugin Debugger" admin page. */
+require_once 'class-jetpack-debugger.php';
+
+if ( version_compare( $wp_version, '5.2-alpha', 'ge' ) ) {
+	require_once 'debug-functions-for-php53.php';
+	add_filter( 'debug_information', array( 'Jetpack_Debug_Data', 'core_debug_data' ) );
+	add_filter( 'site_status_tests', 'jetpack_debugger_site_status_tests' );
+	add_action( 'wp_ajax_health-check-jetpack-local_testing_suite', 'jetpack_debugger_ajax_local_testing_suite' );
+}