Add google-endpoints to third_party/.

third_party/google-endpoints/future/moves/tkinter/ttk.py

Index: third_party/google-endpoints/future/moves/tkinter/ttk.py
diff --git a/third_party/google-endpoints/future/moves/tkinter/ttk.py b/third_party/google-endpoints/future/moves/tkinter/ttk.py
new file mode 100644
index 0000000000000000000000000000000000000000..22ac9774c46ee350976bcae83421a69526911b1f
--- /dev/null
+++ b/third_party/google-endpoints/future/moves/tkinter/ttk.py
@@ -0,0 +1,13 @@
+from __future__ import absolute_import
+
+from future.utils import PY3
+
+if PY3:
+    from tkinter.ttk import *
+else:
+    try:
+        from ttk import *
+    except ImportError:
+        raise ImportError('The ttk module is missing. Does your Py2 '
+                          'installation include tkinter?')
+