Create Tether Chrome OS component and add a skeleton Initializer class.

chromeos/components/tether/initializer.cc

Index: chromeos/components/tether/initializer.cc
diff --git a/chromeos/components/tether/initializer.cc b/chromeos/components/tether/initializer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7cb779db1dd870b8ac0db49356860d779a57212b
--- /dev/null
+++ b/chromeos/components/tether/initializer.cc
@@ -0,0 +1,17 @@
+// Copyright 2016 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/initializer.h"
+
+namespace chromeos {
+
+namespace tether {
+
+Initializer::Initializer() {}
+
+Initializer::~Initializer() {}
+
+}  // namespace tether
+
+}  // namespace chromeos