Add google-endpoints to third_party/.

third_party/google-endpoints/dogpile/core.py

Index: third_party/google-endpoints/dogpile/core.py
diff --git a/third_party/google-endpoints/dogpile/core.py b/third_party/google-endpoints/dogpile/core.py
new file mode 100644
index 0000000000000000000000000000000000000000..2bcfaf8136aed9697136be7014e25b4b3bf438ad
--- /dev/null
+++ b/third_party/google-endpoints/dogpile/core.py
@@ -0,0 +1,17 @@
+"""Compatibility namespace for those using dogpile.core.
+
+As of dogpile.cache 0.6.0, dogpile.core as a separate package
+is no longer used by dogpile.cache.
+
+Note that this namespace will not take effect if an actual
+dogpile.core installation is present.
+
+"""
+
+from .util import nameregistry  # noqa
+from .util import readwrite_lock  # noqa
+from .util.readwrite_lock import ReadWriteMutex  # noqa
+from .util.nameregistry import NameRegistry  # noqa
+from .lock import Lock  # noqa
+from .lock import NeedRegenerationException  # noqa
+from . import __version__ # noqa