Add a snapshot of flutter/engine/src/build to our sdk

build/linux/sysroot_scripts/sysroot-creator-test.sh

Index: build/linux/sysroot_scripts/sysroot-creator-test.sh
diff --git a/build/linux/sysroot_scripts/sysroot-creator-test.sh b/build/linux/sysroot_scripts/sysroot-creator-test.sh
new file mode 100755
index 0000000000000000000000000000000000000000..b346bb70885c2a399b714c2200e7934b2f11f689
--- /dev/null
+++ b/build/linux/sysroot_scripts/sysroot-creator-test.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# Rudimentry test suite for sysroot-creator.
+
+SCRIPT_DIR=$(dirname $0)
+
+set -o errexit
+
+TestUpdateAllLists() {
+  echo "[ RUN      ] TestUpdateAllLists"
+  "$SCRIPT_DIR/sysroot-creator-trusty.sh" UpdatePackageListsAmd64
+  "$SCRIPT_DIR/sysroot-creator-trusty.sh" UpdatePackageListsI386
+  "$SCRIPT_DIR/sysroot-creator-trusty.sh" UpdatePackageListsARM
+  "$SCRIPT_DIR/sysroot-creator-wheezy.sh" UpdatePackageListsAmd64
+  "$SCRIPT_DIR/sysroot-creator-wheezy.sh" UpdatePackageListsI386
+  "$SCRIPT_DIR/sysroot-creator-wheezy.sh" UpdatePackageListsARM
+  echo "[      OK  ]"
+}
+
+TestUpdateAllLists