Move common PVer4 code into a V4ProtocolManagerUtil class.

components/safe_browsing_db/database_manager.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/safe_browsing_db/database_manager.h"
 
 #include "components/safe_browsing_db/v4_get_hash_protocol_manager.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "url/gurl.h"
 
 namespace safe_browsing {
 
 SafeBrowsingDatabaseManager::SafeBrowsingDatabaseManager()
-    : SafeBrowsingDatabaseManager(NULL, V4GetHashProtocolConfig()) {
+    : SafeBrowsingDatabaseManager(NULL, V4ProtocolConfig()) {
 }
 
 SafeBrowsingDatabaseManager::SafeBrowsingDatabaseManager(
     net::URLRequestContextGetter* request_context_getter,
-    const V4GetHashProtocolConfig& config) {
+    const V4ProtocolConfig& config) {
   // Instantiate a V4GetHashProtocolManager.
   if (request_context_getter) {
     v4_get_hash_protocol_manager_.reset(V4GetHashProtocolManager::Create(
         request_context_getter, config));
   }
 }
 
 SafeBrowsingDatabaseManager::~SafeBrowsingDatabaseManager() {
 }
 
 void SafeBrowsingDatabaseManager::CheckApiBlacklistUrl(const GURL& url,
                                                        Client* client) {
   // TODO(kcarattini): Implement this.
 }
 
 }  // namespace safe_browsing