Frog changes (in experimental) to get frog integrated into the test infrastructure.

scripts/bootstrap/frog_wrapper.py

 #!/usr/bin/env python
 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
+import imp
 import os
 import sys
 
-HOME = os.path.dirname(os.path.realpath(__file__))
-# TODO(ngeoffray): does not work on Windows.
-HOME = os.path.join(HOME, os.pardir, os.pardir)
+def main(args):
+  # Try to find frog.py from the current location.
+  home = os.path.join(os.curdir, 'frog.py')
+  if not os.path.exists(home):
+    home = os.path.join(os.curdir, 'frog', 'frog.py')
 
-sys.path.append(HOME)
-import frog
+  if not os.path.exists(home):
+    print "Could not find frog"
+    return 1
 
-def main(args):
-  return frog.main(args)
+  filename = None
+  exit_code = 1
+  try:
+    # Load frog.py and invoke it.
+    paths = [os.path.dirname(home)]
+    (filename, pathname, description) = imp.find_module('frog', paths)
+    module = imp.load_module('frog', filename, pathname, description)
+    exit_code = module.main(args)
+  finally:
+    if filename:
+      filename.close()
+
+  return exit_code
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))