Unify metrics_collection and metrics_daemon into metrics.

src/platform/metrics/metrics_daemon.cc

Index: src/platform/metrics/metrics_daemon.cc
diff --git a/src/platform/metrics_daemon/metrics_daemon.cc b/src/platform/metrics/metrics_daemon.cc
similarity index 98%
rename from src/platform/metrics_daemon/metrics_daemon.cc
rename to src/platform/metrics/metrics_daemon.cc
index 22e5b16d3132901ebc3aa48bd2c5f0ce7535fd96..a924b8ab4a9791c5750bc4de688e35f8ce7782b1 100644
--- a/src/platform/metrics_daemon/metrics_daemon.cc
+++ b/src/platform/metrics/metrics_daemon.cc
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "platform/metrics_daemon/metrics_daemon.h"
+#include "metrics_daemon.h"
+#include "metrics_library.h"
 
 #include <glib-object.h>
-#include <metrics_library.h>
 
 extern "C" {
 #include "marshal_void__string_boxed.h"