Add some basic tests for metrics_daemon.

src/platform/metrics/metrics_daemon_unittest.cc

Index: src/platform/metrics/metrics_daemon_unittest.cc
diff --git a/src/platform/metrics/metrics_daemon_unittest.cc b/src/platform/metrics/metrics_daemon_unittest.cc
deleted file mode 100644
index 222cefab704b690668667ea06f99c161c56d7066..0000000000000000000000000000000000000000
--- a/src/platform/metrics/metrics_daemon_unittest.cc
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright (c) 2009 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 "metrics_daemon.h"
-
-int main(int argc, char** argv) {
-  MetricsDaemon d;
-  d.Run(false, true);
-}