[Swarming] Speed up test262 upload/download.

test/test262/archive.py

Index: test/test262/archive.py
diff --git a/test/test262/archive.py b/test/test262/archive.py
new file mode 100755
index 0000000000000000000000000000000000000000..8398e5171648e10c668d852b62fd8ba1b8cb77ad
--- /dev/null
+++ b/test/test262/archive.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+# Copyright 2016 the V8 project 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 os
+import tarfile
+
+os.chdir(os.path.dirname(os.path.abspath(__file__)))
+
+def filter_git(tar_info):
+  if tar_info.name.startswith(os.path.join('data', '.git')):
+    return None
+  else:
+    return tar_info
+
+with tarfile.open('data.tar', 'w') as tar:
+  tar.add('data', filter=filter_git)