Fix FTP dir listing parser to support servers returning a "total n" line with an incorrect negative…

net/ftp/ftp_directory_listing_parser_ls.cc

Index: net/ftp/ftp_directory_listing_parser_ls.cc
diff --git a/net/ftp/ftp_directory_listing_parser_ls.cc b/net/ftp/ftp_directory_listing_parser_ls.cc
index 96d0dc84607a40f934a2eb882ad06249451db970..b259cad0111bb3b2b8c2244f0a4e6a96417b9870 100644
--- a/net/ftp/ftp_directory_listing_parser_ls.cc
+++ b/net/ftp/ftp_directory_listing_parser_ls.cc
@@ -142,11 +142,12 @@ bool ParseFtpDirectoryListingLs(
     if (columns.size() == 2 && !received_total_line) {
       received_total_line = true;
 
+      // Some FTP servers incorrectly return a negative integer for "n". Since
+      // this value is ignored anyway, just check any valid integer was
+      // provided.
       int64 total_number;
       if (!base::StringToInt64(columns[1], &total_number))
         return false;
-      if (total_number < 0)
-        return false;
 
       continue;
     }