Move tracked prefs into services/preferences/tracked.

services/preferences/tracked/device_id.h

Index: services/preferences/tracked/device_id.h
diff --git a/components/user_prefs/tracked/device_id.h b/services/preferences/tracked/device_id.h
similarity index 83%
rename from components/user_prefs/tracked/device_id.h
rename to services/preferences/tracked/device_id.h
index 2d6d1b8e8b6d0228d19e517ec115b57f4959c564..04355628c7d2a808899bd209587818f34bb0feee 100644
--- a/components/user_prefs/tracked/device_id.h
+++ b/services/preferences/tracked/device_id.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_USER_PREFS_TRACKED_DEVICE_ID_H_
-#define COMPONENTS_USER_PREFS_TRACKED_DEVICE_ID_H_
+#ifndef SERVICES_PREFERENCES_TRACKED_DEVICE_ID_H_
+#define SERVICES_PREFERENCES_TRACKED_DEVICE_ID_H_
 
 #include <string>
 
@@ -20,4 +20,4 @@ enum class MachineIdStatus {
 // cases |machine_id| is left untouched).
 MachineIdStatus GetDeterministicMachineSpecificId(std::string* machine_id);
 
-#endif  // COMPONENTS_USER_PREFS_TRACKED_DEVICE_ID_H_
+#endif  // SERVICES_PREFERENCES_TRACKED_DEVICE_ID_H_