Revert of SafeBrowsing: DatabaseManager owns the V4GetHashProtocolManager

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 3c3435dd095b7ffe30a700c6a0307b5f4abf4919..ec8d59c98b0846bdbb1a06fe4aa4af1a564bd4e3 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.h
+++ b/chrome/browser/safe_browsing/safe_browsing_service.h
@@ -58,7 +58,6 @@
 class SafeBrowsingServiceFactory;
 class SafeBrowsingUIManager;
 class SafeBrowsingURLRequestContextGetter;
-struct V4GetHashProtocolConfig;
 
 #if defined(FULL_SAFE_BROWSING)
 class IncidentReportingService;
@@ -104,12 +103,6 @@
   // Create a protocol config struct.
   virtual SafeBrowsingProtocolConfig GetProtocolConfig() const;
 
-  // Create a v4 protocol config struct.
-  virtual V4GetHashProtocolConfig GetV4GetHashProtocolConfig() const;
-
-  // Returns the client_name field for both V3 and V4 protocol manager configs.
-  std::string GetProtocolConfigClientName() const;
-
   // Get current enabled status. Must be called on IO thread.
   bool enabled() const {
     DCHECK_CURRENTLY_ON(content::BrowserThread::IO);