Implement TLS client auth in the OS X OpenSSL port.

net/ssl/openssl_platform_key_win.cc

Index: net/ssl/openssl_platform_key_win.cc
diff --git a/net/ssl/openssl_platform_key_win.cc b/net/ssl/openssl_platform_key_win.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c7db5cbd7dcbfbc6f031a922eb0352588e0b3228
--- /dev/null
+++ b/net/ssl/openssl_platform_key_win.cc
@@ -0,0 +1,18 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/ssl/openssl_platform_key.h"
+
+#include "base/logging.h"
+
+namespace net {
+
+crypto::ScopedEVP_PKEY FetchClientCertPrivateKey(
+    const X509Certificate* certificate) {
+  // TODO(davidben): Implement on Windows.
+  NOTIMPLEMENTED();
+  return crypto::ScopedEVP_PKEY();
+}
+
+}  // namespace net