Move preference MACs to the protected preference stores.

chrome/browser/prefs/pref_hash_filter.h

Index: chrome/browser/prefs/pref_hash_filter.h
diff --git a/chrome/browser/prefs/pref_hash_filter.h b/chrome/browser/prefs/pref_hash_filter.h
index 217396fdcb77733007ef3b9332822dc548d54bea..4110857557a53b6bd23f1ac93283c6055275b064 100644
--- a/chrome/browser/prefs/pref_hash_filter.h
+++ b/chrome/browser/prefs/pref_hash_filter.h
@@ -82,12 +82,12 @@ class PrefHashFilter : public InterceptablePrefFilter {
 
   // Initializes the PrefHashStore with hashes of the tracked preferences in
   // |pref_store|.

[gab, 2014/06/13 01:57:43]

Update this comment.

[erikwright (departed), 2014/06/16 20:51:26]

Done.

-  void Initialize(const PrefStore& pref_store);
+  void Initialize(base::DictionaryValue* pref_store_contents);
 
   // PrefFilter remaining implementation.
   virtual void FilterUpdate(const std::string& path) OVERRIDE;
   virtual void FilterSerializeData(
-      const base::DictionaryValue* pref_store_contents) OVERRIDE;
+      base::DictionaryValue* pref_store_contents) OVERRIDE;
 
  private:
   // InterceptablePrefFilter implementation.