Add google-endpoints to third_party/.

third_party/google-endpoints/pyasn1/type/useful.py

Index: third_party/google-endpoints/pyasn1/type/useful.py
diff --git a/third_party/google-endpoints/pyasn1/type/useful.py b/third_party/google-endpoints/pyasn1/type/useful.py
new file mode 100644
index 0000000000000000000000000000000000000000..176653488944eb65baf50ca7295462592d5638c6
--- /dev/null
+++ b/third_party/google-endpoints/pyasn1/type/useful.py
@@ -0,0 +1,17 @@
+# ASN.1 "useful" types
+from pyasn1.type import char, tag
+
+class ObjectDescriptor(char.GraphicString):
+    tagSet = char.GraphicString.tagSet.tagImplicitly(
+        tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 7)
+        )
+
+class GeneralizedTime(char.VisibleString):
+    tagSet = char.VisibleString.tagSet.tagImplicitly(
+        tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 24)
+        )
+
+class UTCTime(char.VisibleString):
+    tagSet = char.VisibleString.tagSet.tagImplicitly(
+        tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 23)
+        )