Move IVocabularyFactory to zope.schema.interfaces.

Note that this doesn't require BBB. IVocabularyFactory's location at
zope.app.schema.interfaces was introduced only a month back, therefore
never released.

__init__.py

@@ -0,0 +1,32 @@
+##############################################################################
+#
+# Copyright (c) 2002 Zope Corporation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Content Type convenience lookup functions 
+
+$Id$
+"""
+__docformat__ = 'restructuredtext'
+from zope.interface import classProvides
+from zope.schema.interfaces import IVocabularyFactory
+from zope.app.interface import queryType
+from zope.app.content.interfaces import IContentType
+from zope.app.component.vocabulary import UtilityVocabulary
+
+def queryContentType(object):
+    """Returns the interface implemented by object which implements
+    `IContentType`."""
+    return queryType(object, IContentType)
+
+class ContentTypesVocabulary(UtilityVocabulary):
+    classProvides(IVocabularyFactory)
+    interface = IContentType