Add WebSocketStream factory function

net/websockets/websocket_stream.cc

Index: net/websockets/websocket_stream.cc
diff --git a/net/websockets/websocket_stream.cc b/net/websockets/websocket_stream.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f5da6852cae8a11a7d84a95aa30c0f4118a2191d
--- /dev/null
+++ b/net/websockets/websocket_stream.cc
@@ -0,0 +1,26 @@
+// Copyright 2013 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/websockets/websocket_stream.h"
+
+#include "base/logging.h"
+
+namespace net {
+
+WebSocketStream::WebSocketStream()
+  : WebSocketStreamBase() {}
+WebSocketStream::~WebSocketStream() {}
+
+// Placeholder until the real implementation is ready.
+void WebSocketStream::CreateAndConnectStream(
+    const GURL& socket_url,
+    const std::vector<std::string>& requested_protocols,
+    const GURL& origin,
+    URLRequestContext* url_request_context,
+    const SuccessCallback& on_success,
+    const FailureCallback& on_failure) {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace net