Added support for private projects.

projects.py

Index: projects.py
diff --git a/projects.py b/projects.py
index d304dadcf846d2c42763abf2f43987ef08b55eae..13768eabf0fc6a7a0550ddc8811577d0e8531c78 100644
--- a/projects.py
+++ b/projects.py
@@ -39,6 +39,7 @@ if os.path.isdir(INTERNAL_DIR):
   import gyp_committers  # pylint: disable=F0401
   import nacl_committers  # pylint: disable=F0401
   import skia_committers  # pylint: disable=F0401
+  import projects_internal  # pylint: disable=F0401
 else:
   print >> sys.stderr, (
       'Failed to find commit-queue-internal; will fail to start!')
@@ -46,7 +47,7 @@ else:
   gyp_committers = None
   nacl_committers = None
   skia_committers = None
-
+  projects_internal = None
 
 # It's tricky here because 'chrome' is remapped to 'svn' on src.chromium.org but
 # the other repositories keep their repository name. So don't list it here.
@@ -757,14 +758,45 @@ def _internal_simple(path, project_bases, user, root_dir, rietveld_obj):
       verifiers)
 
 
+def _get_supported_projects():
+  """Return project names and corresponding functions in a dict.
+
+  Projects functions start with '_gen_' and are searched for in the present
+  file and in commit-queue-internal/projects_internal.py.
+  """
+  projects = {}
+  for name in dir(sys.modules[__name__]):
+    if name.startswith('_gen_'):
+      projects[name[5:]] = getattr(sys.modules[__name__], name)
+
+  if projects_internal:
+    for name in dir(sys.modules['projects_internal']):
+      if name.startswith('_gen_'):
+        if name[5:] in projects:
+          raise errors.ConfigurationError(
+              'public project function %s overriden by private one'
+              % name)
+        projects[name[5:]] = getattr(sys.modules['projects_internal'], name)
+
+  return projects
+
+
 def supported_projects():
   """List the projects that can be managed by the commit queue."""
-  return sorted(
-      x[5:] for x in dir(sys.modules[__name__]) if x.startswith('_gen_'))
+  return sorted(_get_supported_projects().keys())
 
 
 def load_project(project, user, root_dir, rietveld_obj, no_try):
-  """Loads the specified project."""
+  """Loads the specified project.
+
+  Args:
+  project (string): project name (suffix of _gen_* functions above)
+  user (string): email address identifying the commit bot.
+  root_dir (string): working directory (were credentials are stored e.g. .gaia)
+  rietveld_obj (rietveld.Rietveld): object for communicating with Rietveld.
+  no_try (boolean): is True, means "do not send try jobs"
+  """
   assert os.path.isabs(root_dir)
-  return getattr(sys.modules[__name__], '_gen_' + project)(
-      user, root_dir, rietveld_obj, no_try)
+  return _get_supported_projects()[project](
+    user, root_dir, rietveld_obj, no_try)
+