Add google-endpoints to third_party/.

third_party/google-endpoints/urllib3/packages/ssl_match_hostname/__init__.py

Index: third_party/google-endpoints/urllib3/packages/ssl_match_hostname/__init__.py
diff --git a/third_party/google-endpoints/urllib3/packages/ssl_match_hostname/__init__.py b/third_party/google-endpoints/urllib3/packages/ssl_match_hostname/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..d6594eb264d3bbe36b98209d77de55a806817751
--- /dev/null
+++ b/third_party/google-endpoints/urllib3/packages/ssl_match_hostname/__init__.py
@@ -0,0 +1,19 @@
+import sys
+
+try:
+    # Our match_hostname function is the same as 3.5's, so we only want to
+    # import the match_hostname function if it's at least that good.
+    if sys.version_info < (3, 5):
+        raise ImportError("Fallback to vendored code")
+
+    from ssl import CertificateError, match_hostname
+except ImportError:
+    try:
+        # Backport of the function from a pypi module
+        from backports.ssl_match_hostname import CertificateError, match_hostname
+    except ImportError:
+        # Our vendored copy
+        from ._implementation import CertificateError, match_hostname
+
+# Not needed, but documenting what we provide.
+__all__ = ('CertificateError', 'match_hostname')