Move tracked prefs into services/preferences/tracked.

services/preferences/tracked/pref_hash_calculator.h

Index: services/preferences/tracked/pref_hash_calculator.h
diff --git a/components/user_prefs/tracked/pref_hash_calculator.h b/services/preferences/tracked/pref_hash_calculator.h
similarity index 89%
rename from components/user_prefs/tracked/pref_hash_calculator.h
rename to services/preferences/tracked/pref_hash_calculator.h
index 92b0c3a05d9d2e2d6d55dc18a598afa3c5d526d5..1fc14a180aa7dc8c94aa6401c2dce166c66ccc2d 100644
--- a/components/user_prefs/tracked/pref_hash_calculator.h
+++ b/services/preferences/tracked/pref_hash_calculator.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_PREF_HASH_CALCULATOR_H_
-#define COMPONENTS_USER_PREFS_TRACKED_PREF_HASH_CALCULATOR_H_
+#ifndef SERVICES_PREFERENCES_TRACKED_PREF_HASH_CALCULATOR_H_
+#define SERVICES_PREFERENCES_TRACKED_PREF_HASH_CALCULATOR_H_
 
 #include <string>
 
@@ -52,4 +52,4 @@ class PrefHashCalculator {
   DISALLOW_COPY_AND_ASSIGN(PrefHashCalculator);
 };
 
-#endif  // COMPONENTS_USER_PREFS_TRACKED_PREF_HASH_CALCULATOR_H_
+#endif  // SERVICES_PREFERENCES_TRACKED_PREF_HASH_CALCULATOR_H_