Add SSLSocket interface.

net/socket/ssl_socket.h

Index: net/socket/ssl_socket.h
diff --git a/net/socket/ssl_socket.h b/net/socket/ssl_socket.h
new file mode 100644
index 0000000000000000000000000000000000000000..8445d7d6739f5f3f0d42e537a36c16ba8b24985d
--- /dev/null
+++ b/net/socket/ssl_socket.h
@@ -0,0 +1,34 @@
+// Copyright (c) 2011 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.
+
+#ifndef NET_SOCKET_SSL_SOCKET_H_
+#define NET_SOCKET_SSL_SOCKET_H_
+
+#include "base/basictypes.h"
+#include "net/socket/stream_socket.h"
+
+namespace base {
+class StringPiece;
+}  // namespace base
+
+namespace net {
+
+// SSLSocket interface defines method that are common between client
+// and server SSL sockets.
+class NET_EXPORT SSLSocket : public StreamSocket {
+public:
+  virtual ~SSLSocket() {}
+
+  // Exports data derived from the SSL master-secret (see RFC 5705).
+  // The call will fail with an error if the socket is not connected, or the
+  // SSL implementation does not support the operation.
+  virtual int ExportKeyingMaterial(const base::StringPiece& label,
+                                   const base::StringPiece& context,
+                                   unsigned char *out,
+                                   unsigned int outlen) = 0;
+};
+
+}  // namespace net
+
+#endif  // NET_SOCKET_SSL_SOCKET_H_