Add a Mojo recipe to make mojo fetch-able.

recipes/mojo.py

+# 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.
+
+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 Mojo(recipe_util.Recipe):
+  """Basic Recipe class for Mojo."""
+
+  @staticmethod
+  def fetch_spec(props):
+    url = 'https://github.com/domokit/mojo.git'
+    solution = {
+      'name'   :'src',

[agable, 2014/10/22 10:54:37]

Does mojo really want to be called src? If it doesn't require it, I'd suggest
calling it something else, probably just 'mojo'.

[Dirk Pranke, 2014/10/22 16:19:28]

Good question. For now, yes, it does; the mojo checkout is basically a
stripped-down version of a chromium checkout, and it's easier to keep 'src' the
same across both. I'm not actually sure if anything *requires* 'src', but we can
dig into that later.

+      'url'    : url,
+      'deps_file': 'DEPS',
+      'managed'   : False,
+      'custom_deps': {},
+      'safesync_url': '',
+    }
+    spec = {
+      'solutions': [solution],
+    }
+    if props.get('target_os'):
+      spec['target_os'] = props['target_os'].split(',')
+    checkout_type = 'gclient_git'
+    spec_type = '%s_spec' % checkout_type

[agable, 2014/10/22 10:54:37]

Since there's no logic determining the checkout_type (e.g. it can't ever be
'gclient_git_svn', just hardcode these values directly in the return dictionary.
See the fetch infra recipe.

[Dirk Pranke, 2014/10/22 16:19:28]

Ok. I was cloning other recipes here for consistency, but I see you just changed
them in your other CL.  I prefer the hardcoded approach myself :).

+    return {
+      'type': checkout_type,
+      spec_type: spec,
+    }
+
+  @staticmethod
+  def expected_root(_props):
+    return 'src'

[agable, 2014/10/22 10:54:37]

here too

[Dirk Pranke, 2014/10/22 16:19:28]

same answer :).

+
+
+def main(argv=None):
+  return Mojo().handle_args(argv)
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))