virtual void PinAppWithID(const std::string& app_id) OVERRIDE;
virtual bool IsAppPinned(const std::string& app_id) OVERRIDE;
virtual bool CanPin() const OVERRIDE;
virtual void PinAppWithID(const std::string& app_id) OVERRIDE;
virtual bool IsAppPinned(const std::string& app_id) OVERRIDE;
virtual bool CanPin() const OVERRIDE;