Add fetch recipe alias targeting Android

recipes/chromium.py

 # 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.
 
-# pylint: disable=F0401
-import recipe_util
 import sys
 
+import recipe_util  # pylint: disable=F0401
+
+
+# This class doesn't need an __init__ method, so we disable the warning
 # pylint: disable=W0232
 class Chromium(recipe_util.Recipe):
   """Basic Recipe class for Chromium."""
 
   @staticmethod
   def fetch_spec(props):
     url = 'https://chromium.googlesource.com/chromium/src.git'
     solution = { 'name'   :'src',
                  'url'    : url,
                  'deps_file': '.DEPS.git',
                  'managed'   : True,
                  'custom_deps': {},
                  'safesync_url': '',
     }
     if props.get('webkit_rev', '') == 'ToT':
       solution['custom_vars'] = {'webkit_rev': ''}
     spec = {
       'solutions': [solution],
       'svn_url': 'svn://svn.chromium.org/chrome',
       'svn_branch': 'trunk/src',
       'svn_ref': 'git-svn',
     }
     if props.get('submodule_git_svn_spec'):
       spec['submodule_git_svn_spec'] = props['submodule_git_svn_spec']
+    if props.get('target_os'):
+      spec['target_os'] = props['target_os'].split(',')
     checkout_type = 'gclient_git_svn'
     if props.get('nosvn'):
       checkout_type = 'gclient_git'
     spec_type = '%s_spec' % checkout_type
     return {
       'type': checkout_type,
-      spec_type: spec
+      spec_type: spec,
     }
 
   @staticmethod
   def expected_root(_props):
     return 'src'
 
 
 def main(argv=None):
   return Chromium().handle_args(argv)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))