Make Hands-Off Zero-Touch Enrollment compatibile with tests

chromeos/network/portal_detector/mock_network_portal_detector.cc

Index: chromeos/network/portal_detector/mock_network_portal_detector.cc
diff --git a/chromeos/network/portal_detector/mock_network_portal_detector.cc b/chromeos/network/portal_detector/mock_network_portal_detector.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e507980293c77878f1b5769cb8af3250092faf51
--- /dev/null
+++ b/chromeos/network/portal_detector/mock_network_portal_detector.cc
@@ -0,0 +1,13 @@
+// Copyright 2017 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 "chromeos/network/portal_detector/mock_network_portal_detector.h"
+
+namespace chromeos {
+
+MockNetworkPortalDetector::MockNetworkPortalDetector() {}
+
+MockNetworkPortalDetector::~MockNetworkPortalDetector() {}
+
+}  // namespace chromeos