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

components/safe_browsing_db/v4_get_hash_protocol_manager.cc

Index: components/safe_browsing_db/v4_get_hash_protocol_manager.cc
diff --git a/components/safe_browsing_db/v4_get_hash_protocol_manager.cc b/components/safe_browsing_db/v4_get_hash_protocol_manager.cc
index 90b9caef626bdd39a3f3d4c2347bd934406c40bd..4b5f911d3aea69310fb8be800b29b7dff126aac1 100644
--- a/components/safe_browsing_db/v4_get_hash_protocol_manager.cc
+++ b/components/safe_browsing_db/v4_get_hash_protocol_manager.cc
@@ -6,7 +6,7 @@
 
 #include <utility>
 
-#include "base/base64.h"
+#include "base/base64url.h"
 #include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/timer/timer.h"
@@ -154,8 +154,8 @@ std::string V4GetHashProtocolManager::GetHashRequest(
   // Serialize and Base64 encode.
   std::string req_data, req_base64;
   req.SerializeToString(&req_data);
-  base::Base64Encode(req_data, &req_base64);
-
+  base::Base64UrlEncode(req_data, base::Base64UrlEncodePolicy::INCLUDE_PADDING,
+                        &req_base64);
   return req_base64;
 }