Added gsutil to depot tools

third_party/gsutil/gslib/no_op_auth_plugin.py

+# Copyright 2011 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.
+
+# This code implements a no-op auth plugin, which allows users to use
+# gsutil for accessing publicly readable buckets and objects without first
+# signing up for an account.
+
+from boto.auth_handler import AuthHandler
+
+
+class NoOpAuth(AuthHandler):
+
+  capability = ['s3']
+
+  def __init__(self, path, config, provider):
+    pass
+
+  def add_auth(self, http_request):
+    pass