Remove unloaded profile hash store initialization,

chrome/browser/prefs/tracked/pref_service_hash_store_contents.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PREFS_TRACKED_PREF_SERVICE_HASH_STORE_CONTENTS_H_
 #define CHROME_BROWSER_PREFS_TRACKED_PREF_SERVICE_HASH_STORE_CONTENTS_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 31 matching lines @@
   // Registers required preferences.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
   // Deletes stored hashes for all profiles from |pref_service|.
   static void ResetAllPrefHashStores(PrefService* pref_service);
 
   // HashStoreContents implementation
   virtual std::string hash_store_id() const OVERRIDE;
   virtual void Reset() OVERRIDE;
   virtual bool IsInitialized() const OVERRIDE;
-  virtual bool GetVersion(int* version) const OVERRIDE;
-  virtual void SetVersion(int version) OVERRIDE;
   virtual const base::DictionaryValue* GetContents() const OVERRIDE;
   virtual scoped_ptr<MutableDictionary> GetMutableContents() OVERRIDE;
   virtual std::string GetSuperMac() const OVERRIDE;
   virtual void SetSuperMac(const std::string& super_mac) OVERRIDE;
   virtual void CommitPendingWrite() OVERRIDE;
 
  private:
   const std::string hash_store_id_;
   PrefService* pref_service_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefServiceHashStoreContents);
 };
 
 #endif  // CHROME_BROWSER_PREFS_TRACKED_PREF_SERVICE_HASH_STORE_CONTENTS_H_