Use GetDeterministicMachineSpecificId instead of RLZ for device_id

components/user_prefs/tracked/pref_hash_calculator.h

Index: components/user_prefs/tracked/pref_hash_calculator.h
diff --git a/components/user_prefs/tracked/pref_hash_calculator.h b/components/user_prefs/tracked/pref_hash_calculator.h
index 1f9b74f0ad75ab5b61f6ac6a3a7b07a1afbf83d4..9d02e2ce32f2b8f1763d6bbad7c24eea12db9b15 100644
--- a/components/user_prefs/tracked/pref_hash_calculator.h
+++ b/components/user_prefs/tracked/pref_hash_calculator.h
@@ -23,10 +23,13 @@ class PrefHashCalculator {
     VALID_SECURE_LEGACY,
   };
 
-  // Constructs a PrefHashCalculator using |seed| and |device_id|. The same
-  // parameters must be used in order to successfully validate generated hashes.
-  // |device_id| may be empty.
-  PrefHashCalculator(const std::string& seed, const std::string& device_id);
+  // Constructs a PrefHashCalculator using |seed|, |device_id| and
+  // |legacy_device_id|. The  same parameters must be used in order to

[gab, 2017/01/17 21:03:47]

nit: - extra space before "same"

[proberge, 2017/01/18 16:10:58]

Done.

+  // successfully validate generated hashes. |_device_id| or |legacy_device_id|
+  // may be empty.
+  PrefHashCalculator(const std::string& seed,
+                     const std::string& device_id,
+                     const std::string& legacy_device_id);
 
   ~PrefHashCalculator();