Add upstream

wp-content/plugins/jetpack/sal/class.json-api-platform.php

@@ -0,0 +1,25 @@
+<?php
+
+require_once dirname( __FILE__ ) . '/class.json-api-token.php';
+
+abstract class SAL_Platform {
+	public $token;
+
+	function __construct( $token ) {
+		if ( is_array( $token ) ) {
+			$token = SAL_Token::from_rest_token( $token );
+		} else {
+			$token = SAL_Token::for_anonymous_user();
+		}
+
+		$this->token = $token;
+	}
+
+	abstract public function get_site( $blog_id );
+}
+
+if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
+	require_once dirname( __FILE__ ) . '/class.json-api-platform-wpcom.php';
+} else {
+	require_once dirname( __FILE__ ) . '/class.json-api-platform-jetpack.php';
+}