Get service processes working on Mac and Linux.

chrome/service/service_process_prefs.h

 // Copyright (c) 2010 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_SERVICE_SERVICE_PROCESS_PREFS_H_
 #define CHROME_SERVICE_SERVICE_PROCESS_PREFS_H_
 #pragma once
 
 #include <string>
 
@@ skipping 23 matching lines @@
   // Get a boolean preference for |key| and store it in |result|.
   void GetBoolean(const std::string& key, bool* result);
 
   // Set a boolean |value| for |key|.
   void SetBoolean(const std::string& key, bool value);
 
   // Get a dictionary preference for |key| and store it in |result|.
   void GetDictionary(const std::string& key, DictionaryValue** result);
 
  private:
-  JsonPrefStore prefs_;
+  scoped_refptr<JsonPrefStore> prefs_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceProcessPrefs);
 };
 
 #endif  // CHROME_SERVICE_SERVICE_PROCESS_PREFS_H_