Fetch extension blacklist states from SafeBrowsing server

chrome/browser/safe_browsing/safe_browsing_service.h

Index: chrome/browser/safe_browsing/safe_browsing_service.h
diff --git a/chrome/browser/safe_browsing/safe_browsing_service.h b/chrome/browser/safe_browsing/safe_browsing_service.h
index 8fe5b7dd32b42d77825e8513143a6a8f64f42e57..61e197a55cc8a7de22e8f736982a75aef2b5828d 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.h
+++ b/chrome/browser/safe_browsing/safe_browsing_service.h
@@ -24,6 +24,7 @@
 
 class PrefChangeRegistrar;
 class PrefService;
+struct SafeBrowsingProtocolConfig;
 class SafeBrowsingDatabaseManager;
 class SafeBrowsingPingManager;
 class SafeBrowsingProtocolManager;
@@ -79,6 +80,9 @@ class SafeBrowsingService
   // should be calculated for safebrowsing.
   bool DownloadBinHashNeeded() const;
 
+  // Create a protocol config struct.
+  SafeBrowsingProtocolConfig GetProtocolConfig() const;
+
   bool enabled() const { return enabled_; }
 
   safe_browsing::ClientSideDetectionService*