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
 
 # pylint: disable=W0232
 class Chromium(recipe_util.Recipe):
@@ skipping 12 matching lines @@
     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(',')

[M-A Ruel, 2013/04/24 13:09:14]

Any problem about whitespaces? If so;
[i.strip() for i in props['target_os'].split(',') if i.strip()]

[janx, 2013/04/26 10:05:09]

I don't see why we would have whitespace problems. To set those values, the user
calls `fetch recipe --target_os=first,second`, and adding whitespaces here would
require additional quotes or else fetch will see several arguments and break.
Also, `strip()` would not help against errors like `--target_os="first second"`,
so I guess we can let gclient complain about any format errors in the resulting
spec.

     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
     }
 
   @staticmethod
   def expected_root(_props):
     return 'src'
 
 
 def main(argv=None):
   return Chromium().handle_args(argv)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))