Added a test for success after one backoff

components/safe_browsing_db/v4_update_protocol_manager.h

 // Copyright 2016 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.
 
 #ifndef COMPONENTS_SAFE_BROWSING_DB_V4_UPDATE_PROTOCOL_MANAGER_H_
 #define COMPONENTS_SAFE_BROWSING_DB_V4_UPDATE_PROTOCOL_MANAGER_H_
 
 // A class that implements Chrome's interface with the SafeBrowsing V4 update
 // protocol.
 //
@@ skipping 69 matching lines @@
       const base::hash_map<UpdateListIdentifier, std::string>&
           current_list_states,
       V4UpdateCallback callback);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(V4UpdateProtocolManagerTest,
                            TestGetUpdatesErrorHandlingNetwork);
   FRIEND_TEST_ALL_PREFIXES(V4UpdateProtocolManagerTest,
                            TestGetUpdatesErrorHandlingResponseCode);
   FRIEND_TEST_ALL_PREFIXES(V4UpdateProtocolManagerTest, TestGetUpdatesNoError);
+  FRIEND_TEST_ALL_PREFIXES(V4UpdateProtocolManagerTest,
+                           TestGetUpdatesWithOneBackoff);
   friend class V4UpdateProtocolManagerFactoryImpl;
 
   // The method to generate the URL for the request to be sent to the server.
   // |request_base64| is the base64 encoded form of an instance of the protobuf
   // FetchThreatListUpdatesRequest.
   GURL GetUpdateUrl(const std::string& request_base64) const;
 
   // Fills a FetchThreatListUpdatesRequest protocol buffer for a request.
   // Returns the serialized and base 64 encoded request as a string.
   std::string GetBase64SerializedUpdateRequestProto(
@@ skipping 87 matching lines @@
           current_list_states,
       V4UpdateCallback callback) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(V4UpdateProtocolManagerFactory);
 };
 
 }  // namespace safe_browsing
 
 #endif  // COMPONENTS_SAFE_BROWSING_DB_V4_UPDATE_PROTOCOL_MANAGER_H_