Fixes brave/brave-browser#1193

wip --

Addressing comments

Author: Jason Sadler

include/bat/ledger/ledger.h

@@ -169,7 +169,7 @@ class LEDGER_EXPORT Ledger {
                                const std::string& baseDomain,
                                const std::string& path,
                                ledger::PUBLISHER_MONTH month,
-                               int year) = 0;
+                               int year) = 0;  
 };
 
 }  // namespace ledger

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,

include/bat/ledger/ledger_client.h

@@ -31,6 +31,8 @@ using PublisherInfoCallback = std::function<void(Result,
     std::unique_ptr<PublisherInfo>)>;
 using GetPublisherInfoListCallback =
     std::function<void(const PublisherInfoList&, uint32_t /* next_record */)>;
+using GetNicewareListCallback =
+    std::function<void(Result, const std::string&)>;
 
 class LEDGER_EXPORT LedgerClient {
  public:
@@ -58,6 +60,7 @@ class LEDGER_EXPORT LedgerClient {
   virtual void LoadPublisherList(LedgerCallbackHandler* handler) = 0;
 
 
+  virtual void LoadNicewareList(ledger::GetNicewareListCallback callback) = 0;
 
   virtual void SavePublisherInfo(std::unique_ptr<PublisherInfo> publisher_info,
                                 PublisherInfoCallback callback) = 0;