Make base::Base64Encode() return void

net/http/http_auth_sspi_win.cc

Index: net/http/http_auth_sspi_win.cc
diff --git a/net/http/http_auth_sspi_win.cc b/net/http/http_auth_sspi_win.cc
index 11d64dc40b14839a2565277f68c172d6171fea32..5718f9ef753b6b1289849a1f34cc7fb765bb4836 100644
--- a/net/http/http_auth_sspi_win.cc
+++ b/net/http/http_auth_sspi_win.cc
@@ -280,13 +280,9 @@ int HttpAuthSSPI::GenerateAuthToken(const AuthCredentials* credentials,
   // Base64 encode data in output buffer and prepend the scheme.
   std::string encode_input(static_cast<char*>(out_buf), out_buf_len);
   std::string encode_output;
-  bool base64_rv = base::Base64Encode(encode_input, &encode_output);
+  base::Base64Encode(encode_input, &encode_output);
   // OK, we are done with |out_buf|
   free(out_buf);
-  if (!base64_rv) {
-    LOG(ERROR) << "Base64 encoding of auth token failed.";
-    return ERR_ENCODING_CONVERSION_FAILED;
-  }
   *auth_token = scheme_ + " " + encode_output;
   return OK;
 }