Added synchronous socket implementation to dart:io.

runtime/bin/sync_socket_win.cc

Index: runtime/bin/sync_socket_win.cc
diff --git a/runtime/bin/sync_socket_win.cc b/runtime/bin/sync_socket_win.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f01ac1c1b06c92f3e16424dd3eb474b523e5f8a1
--- /dev/null
+++ b/runtime/bin/sync_socket_win.cc
@@ -0,0 +1,50 @@
+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#if !defined(DART_IO_DISABLED)
+
+#include "platform/globals.h"
+#if defined(HOST_OS_WINDOWS)
+
+#include "bin/builtin.h"
+#include "bin/log.h"
+#include "bin/utils.h"
+#include "bin/utils_win.h"
+
+namespace dart {
+namespace bin {
+
+SynchronousSocket::SynchronousSocket(intptr_t fd)
+    : ReferenceCounted(), fd_(fd), port_(ILLEGAL_PORT) {
+  LOG_ERR("SynchronousSocket is unimplemented\n");
+  UNIMPLEMENTED();
+}
+
+
+void SynchronousSocket::SetClosedFd() {
+  LOG_ERR("SynchronousSocket::SetClosedFd is unimplemented\n");
+  UNIMPLEMENTED();
+}
+
+
+intptr_t SynchronousSocket::CreateConnect(const RawAddr& addr) {
+  LOG_ERR("SynchronousSocket::CreateConnect is unimplemented\n");
+  UNIMPLEMENTED();
+  return -1;
+}
+
+
+intptr_t SynchronousSocket::CreateBindConnect(const RawAddr& addr,
+                                              const RawAddr& source_addr) {
+  LOG_ERR("SynchronousSocket::CreateBindConnect is unimplemented\n");
+  UNIMPLEMENTED();
+  return -1;
+}
+
+}  // namespace bin
+}  // namespace dart
+
+#endif  // defined(HOST_OS_WINDOWS)
+
+#endif  // !defined(DART_IO_DISABLED)