Check in the thirdparty libs needed for webkitpy.

Tools/Scripts/webkitpy/thirdparty/webpagereplay/third_party/__init__.py

+# Copyright 2010 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.
+
+import os
+import sys
+
+try:
+    __file__
+except NameError:
+    __file__ = sys.argv[0]
+third_party_dir = os.path.dirname(os.path.abspath(__file__))
+ipaddr_dir = os.path.join(third_party_dir, "ipaddr")
+sys.path.append(ipaddr_dir)  # workaround for no __init__.py
+sys.path.append(third_party_dir)