Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/woocommerce/src/Admin/Overrides/ThemeUpgraderSkin.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * Theme upgrader skin used in REST API response.
+ */
+
+namespace Automattic\WooCommerce\Admin\Overrides;
+
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Admin\Overrides\ThemeUpgraderSkin Class.
+ */
+class ThemeUpgraderSkin extends \Theme_Upgrader_Skin {
+	/**
+	 * Avoid undefined property error from \Theme_Upgrader::check_parent_theme_filter().
+	 *
+	 * @var array
+	 */
+	public $api;
+
+	/**
+	 * Hide the skin header display.
+	 */
+	public function header() {}
+
+	/**
+	 * Hide the skin footer display.
+	 */
+	public function footer() {}
+
+	/**
+	 * Hide the skin feedback display.
+	 *
+	 * @param string $string String to display.
+	 * @param mixed  ...$args Optional text replacements.
+	 */
+	public function feedback( $string, ...$args ) {}
+
+	/**
+	 * Hide the skin after display.
+	 */
+	public function after() {}
+}