Issue #1234, #2058 - Rewrite log facility, improving thread implementation

src/plugin/PluginSettings.h

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 46 matching lines @@
   void Clear();
 
   // Private constructor used by the singleton pattern
   CPluginSettings();
 
 public:
   ~CPluginSettings();
 
   static CPluginSettings* s_instance;
 
-  static bool HasInstance();
   static CPluginSettings* GetInstance();
 
   bool IsPluginEnabled() const;
 
   std::map<std::wstring, std::wstring> GetFilterLanguageTitleList() const;
 
 public:
 
   void TogglePluginEnabled();
   bool GetPluginEnabled() const;
 
-  void AddError(const CString& error, const CString& errorCode);
-
   // Settings whitelist
 private:
   std::vector<std::wstring> m_whitelistedDomains;
   void ClearWhitelist();
   bool ReadWhitelist(bool bDebug=true);
 
 public:
   void AddWhiteListedDomain(const std::wstring& domain);
   void RemoveWhiteListedDomain(const std::wstring& domain);
   int GetWhiteListedDomainCount() const;
   std::vector<std::wstring> GetWhiteListedDomainList();
 
   bool RefreshWhitelist();
 
   void SetSubscription(const std::wstring& url);
   std::wstring GetSubscription();
 };
 
 #endif // _PLUGIN_SETTINGS_H_