shill: Add a basic PowerManager DBus proxy.

It will be used to communicate with powerd to handle suspend/resume events.

BUG=chromium-os:22409
TEST=unit tests

Change-Id: I982211a22a70bb67efafc4652ffe6ce8375600e6
Reviewed-on: https://gerrit.chromium.org/gerrit/11126
Commit-Ready: Darin Petkov <petkov@chromium.org>
Reviewed-by: Darin Petkov <petkov@chromium.org>
Tested-by: Darin Petkov <petkov@chromium.org>
diff --git a/mock_power_manager_proxy.cc b/mock_power_manager_proxy.cc
new file mode 100644
index 0000000..9836374
--- /dev/null
+++ b/mock_power_manager_proxy.cc
@@ -0,0 +1,13 @@
+// Copyright (c) 2011 The Chromium OS 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 "shill/mock_power_manager_proxy.h"
+
+namespace shill {
+
+MockPowerManagerProxy::MockPowerManagerProxy() {}
+
+MockPowerManagerProxy::~MockPowerManagerProxy() {}
+
+}  // namespace shill