Move 2.7 to 2 (#635)

Closes #579.

stdlib/2/wsgiref/validate.pyi

@@ -0,0 +1,47 @@
+# Stubs for wsgiref.validate (Python 2)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any
+
+class WSGIWarning(Warning): ...
+
+def validator(application): ...
+
+class InputWrapper:
+    input = ... # type: Any
+    def __init__(self, wsgi_input): ...
+    def read(self, *args): ...
+    def readline(self): ...
+    def readlines(self, *args): ...
+    def __iter__(self): ...
+    def close(self): ...
+
+class ErrorWrapper:
+    errors = ... # type: Any
+    def __init__(self, wsgi_errors): ...
+    def write(self, s): ...
+    def flush(self): ...
+    def writelines(self, seq): ...
+    def close(self): ...
+
+class WriteWrapper:
+    writer = ... # type: Any
+    def __init__(self, wsgi_writer): ...
+    def __call__(self, s): ...
+
+class PartialIteratorWrapper:
+    iterator = ... # type: Any
+    def __init__(self, wsgi_iterator): ...
+    def __iter__(self): ...
+
+class IteratorWrapper:
+    original_iterator = ... # type: Any
+    iterator = ... # type: Any
+    closed = ... # type: Any
+    check_start_response = ... # type: Any
+    def __init__(self, wsgi_iterator, check_start_response): ...
+    def __iter__(self): ...
+    def next(self): ...
+    def close(self): ...
+    def __del__(self): ...