[Swarming] Bundle gcmole tools.

tools/gcmole/download_gcmole_tools.py

Index: tools/gcmole/download_gcmole_tools.py
diff --git a/tools/gcmole/download_gcmole_tools.py b/tools/gcmole/download_gcmole_tools.py
new file mode 100755
index 0000000000000000000000000000000000000000..7183d28f3488b37736777b87aef640dbf91fbb8c
--- /dev/null
+++ b/tools/gcmole/download_gcmole_tools.py
@@ -0,0 +1,22 @@
+#!/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 re
+import subprocess
+
+GCMOLE_PATH = os.path.dirname(os.path.abspath(__file__))
+SHA1_PATH = os.path.join(GCMOLE_PATH, 'gcmole-tools.tar.gz.sha1')
+
+if re.search(r'\bgcmole=1', os.environ.get('GYP_DEFINES', '')):
+  subprocess.check_call([
+    'download_from_google_storage',
+    '-b', 'chrome-v8-gcmole',
+    '-u', '--no_resume',
+    '-s', SHA1_PATH,
+    '--platform=linux*'
+  ])
+else:
+  print 'Skipping gcmole download as gcmole is not set in gyp flags.'