Fixes brave/brave-browser#1193

Refactored loading wordlist from pak

linting and cleanup

Author: Jason Sadler

include/bat/ledger/ledger_callback_handler.h

@@ -20,6 +20,7 @@ LEDGER_EXPORT enum Result {
   INVALID_LEDGER_STATE = 5,
   CAPTCHA_FAILED = 6,
   NO_PUBLISHER_LIST = 7,
+  INVALID_NICEWARE_LIST = 8,
 
   TOO_MANY_RESULTS,
   NOT_FOUND,
@@ -36,6 +37,8 @@ class LEDGER_EXPORT LedgerCallbackHandler {
 
   virtual void OnLedgerStateLoaded(Result result,
                                    const std::string& data) {};
+  virtual void OnNicewareListLoaded(Result result,
+                                   const std::string& data) {};
   virtual void OnLedgerStateSaved(Result result) {};
 
   virtual void OnPublisherStateLoaded(Result result,

include/bat/ledger/ledger_client.h

@@ -49,6 +49,8 @@ class LEDGER_EXPORT LedgerClient {
   virtual void SaveLedgerState(const std::string& ledger_state,
                                LedgerCallbackHandler* handler) = 0;
 
+  virtual void LoadNicewareList(LedgerCallbackHandler* handler) = 0;
+
   virtual void LoadPublisherState(LedgerCallbackHandler* handler) = 0;
   virtual void SavePublisherState(const std::string& publisher_state,
                                   LedgerCallbackHandler* handler) = 0;