Upgrade to oauth2client 2.0.1. Remove support for seperate pem keys.

src/oauth2client/contrib/django_util/storage.py

@@ -0,0 +1,27 @@
+# Copyright 2015 Google Inc.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from oauth2client.contrib.dictionary_storage import DictionaryStorage
+
+_CREDENTIALS_KEY = 'google_oauth2_credentials'
+
+
+def get_storage(request):
+    # TODO(issue 319): Make this pluggable with different storage providers
+    # https://github.com/google/oauth2client/issues/319
+    """ Gets a Credentials storage object for the Django OAuth2 Helper object
+    :param request: Reference to the current request object
+    :return: A OAuth2Client Storage implementation based on sessions
+    """
+    return DictionaryStorage(request.session, key=_CREDENTIALS_KEY)