Small: Use WebBase64/UrlBase64 encoding for requests sent to the server.

components/safe_browsing_db/v4_update_protocol_manager.cc

 // 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.
 
 #include "components/safe_browsing_db/v4_update_protocol_manager.h"
 
 #include <utility>
 
-#include "base/base64.h"
+#include "base/base64url.h"
 #include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/rand_util.h"
 #include "base/timer/timer.h"
 #include "components/safe_browsing_db/safebrowsing.pb.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context_getter.h"
@@ skipping 188 matching lines @@
     list_update_request->set_threat_type(list_to_update.threat_type);
 
     if (!state.empty()) {
       list_update_request->set_state(state);
     }
   }
 
   // Serialize and Base64 encode.
   std::string req_data, req_base64;
   request.SerializeToString(&req_data);
-  base::Base64Encode(req_data, &req_base64);
-
+  base::Base64UrlEncode(req_data, base::Base64UrlEncodePolicy::INCLUDE_PADDING,
+                        &req_base64);
   return req_base64;
 }
 
 bool V4UpdateProtocolManager::ParseUpdateResponse(
     const std::string& data,
     std::vector<ListUpdateResponse>* list_update_responses) {
   FetchThreatListUpdatesResponse response;
 
   if (!response.ParseFromString(data)) {
     RecordParseUpdateResult(PARSE_FROM_STRING_ERROR);
@@ skipping 112 matching lines @@
 
 void V4UpdateProtocolManager::GetUpdateUrlAndHeaders(
     const std::string& req_base64,
     GURL* gurl,
     net::HttpRequestHeaders* headers) const {
   V4ProtocolManagerUtil::GetRequestUrlAndHeaders(
       req_base64, "threatListUpdates:fetch", config_, gurl, headers);
 }
 
 }  // namespace safe_browsing