Add product mode:

tools/utils.py

 # Copyright (c) 2012, 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.
 
 # This file contains a set of utilities functions used by other Python-based
 # scripts.
 
 import commands
 import datetime
 import json
@@ skipping 197 matching lines @@
      value.append(arg)
 
    del parser.rargs[:len(value)]
    setattr(parser.values, option.dest, value)
 
 
 # Mapping table between build mode and build configuration.
 BUILD_MODES = {
   'debug': 'Debug',
   'release': 'Release',
+  'product': 'Product',
 }
 
 
 # Mapping table between OS and build output location.
 BUILD_ROOT = {
   'win32': os.path.join('build'),
   'linux': os.path.join('out'),
   'freebsd': os.path.join('out'),
   'macos': os.path.join('xcodebuild'),
 }
@@ skipping 445 matching lines @@
     os.chdir(self._working_directory)
 
   def __exit__(self, *_):
     print "Enter directory = ", self._old_cwd
     os.chdir(self._old_cwd)
 
 
 if __name__ == "__main__":
   import sys
   Main()