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

build/android/gyp/touch.py

Index: build/android/gyp/touch.py
diff --git a/build/android/gyp/touch.py b/build/android/gyp/touch.py
new file mode 100755
index 0000000000000000000000000000000000000000..7b4375e40abcd3f7e37516f2182dc61d0539d570
--- /dev/null
+++ b/build/android/gyp/touch.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+#
+# 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.
+
+import sys
+
+from util import build_utils
+
+def main(argv):
+  for f in argv[1:]:
+    build_utils.Touch(f)
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))