[CrOS Tether] Create TetherHostResponseRecorder, which records ConnectTetheringResponses and Tether…

chromeos/components/tether/mock_tether_host_response_recorder.cc

Index: chromeos/components/tether/mock_tether_host_response_recorder.cc
diff --git a/chromeos/components/tether/mock_tether_host_response_recorder.cc b/chromeos/components/tether/mock_tether_host_response_recorder.cc
new file mode 100644
index 0000000000000000000000000000000000000000..483c4def615852645c77387967343662d0c45625
--- /dev/null
+++ b/chromeos/components/tether/mock_tether_host_response_recorder.cc
@@ -0,0 +1,18 @@
+// 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/components/tether/mock_tether_host_response_recorder.h"
+
+namespace chromeos {
+
+namespace tether {
+
+MockTetherHostResponseRecorder::MockTetherHostResponseRecorder()
+    : TetherHostResponseRecorder(nullptr) {}
+
+MockTetherHostResponseRecorder::~MockTetherHostResponseRecorder() {}
+
+}  // namespace tether
+
+}  // namespace chromeos