Make blink_trybot recipe work on windows

scripts/tools/runit.py

Index: scripts/tools/runit.py
diff --git a/scripts/tools/runit.py b/scripts/tools/runit.py
new file mode 100644
index 0000000000000000000000000000000000000000..062cf3618c86852683a33646755045ecc2330b95
--- /dev/null
+++ b/scripts/tools/runit.py
@@ -0,0 +1,39 @@
+# Copyright (c) 2013 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
+import os
+import subprocess
+
+SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__))
+BUILD = os.path.abspath(os.path.join(SCRIPT_DIR, '..', '..'))
+
+def main(argv):
+  path = os.environ.get('PYTHONPATH', '')
+  path = path.split(':')
+  def add(new_path):
+    if new_path not in path:
+      path.append(new_path)
+
+  third_party = os.path.join(BUILD, 'third_party')
+  for d in os.listdir(third_party):
+    full = os.path.join(third_party, d)
+    if os.path.isdir(full):
+      add(full)
+  add(os.path.join(BUILD, 'scripts'))
+  add(third_party)
+  add(os.path.join(BUILD, 'site_config'))
+  add(os.path.join(BUILD, '..', 'build_internal', 'site_config'))
+  add('.')
+  os.environ['PYTHONPATH'] = os.pathsep.join(path)
+  print 'Set PYTHONPATH: %s' % os.environ['PYTHONPATH']
+
+  # Use subprocess instead of execv because otherwise windows destroys quoting.
+  p = subprocess.Popen(argv[1:])
+  p.wait()
+  return p.returncode
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))