Move the apptest runner and parts of mopy to the public SDK.

mojo/tools/mojo_demo.py

 #!/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.
 
-from mopy.config import Config
 import argparse
-import mopy.paths
 import os
 import pipes
 import subprocess
 import sys
 
+import add_sdk_tools_to_path
+from mopy.config import Config
+import mopy.paths
+
 # FIXME: We need to merge the mojo/tools and sky/tools directories
 sys.path.append(os.path.join(mopy.paths.Paths().src_root, 'sky', 'tools'))
 from skypy.skyserver import SkyServer
 import skypy.paths
 
 
 def main():
   parser = argparse.ArgumentParser(description='Helper to launch mojo demos')
   parser.add_argument('-d', dest='build_dir', type=str)
   parser.add_argument('--browser', action='store_const', const='browser',
@@ skipping 40 matching lines @@
 
   # http://stackoverflow.com/questions/4748344/whats-the-reverse-of-shlex-split
   # shlex.quote doesn't exist until 3.3
   # This doesn't print exactly what we want, but it's better than nothing:
   print " ".join(map(pipes.quote, cmd))
   with server:
     return subprocess.call(cmd)
 
 if __name__ == '__main__':
   sys.exit(main())