FTP: Clean up the server type histogram to use less space.

net/ftp/ftp_server_type_histograms.cc

Index: net/ftp/ftp_server_type_histograms.cc
diff --git a/net/ftp/ftp_server_type_histograms.cc b/net/ftp/ftp_server_type_histograms.cc
index 591545be438b8d860f6aa9e9e3b899c1a6366e03..84592ed023f540284f2fea63c5dad79cfe959d23 100644
--- a/net/ftp/ftp_server_type_histograms.cc
+++ b/net/ftp/ftp_server_type_histograms.cc
@@ -22,11 +22,11 @@ void UpdateFtpServerTypeHistograms(FtpServerType type) {
   if (type >= 0 && type < NUM_OF_SERVER_TYPES) {
     if (!had_server_type[type]) {
       had_server_type[type] = true;
-      UMA_HISTOGRAM_ENUMERATION("Net.HadFtpServerType",
+      UMA_HISTOGRAM_ENUMERATION("Net.HadFtpServerType2",
                                 type, NUM_OF_SERVER_TYPES);
     }
   }
-  UMA_HISTOGRAM_ENUMERATION("Net.FtpServerTypeCount",
+  UMA_HISTOGRAM_ENUMERATION("Net.FtpServerTypeCount2",
                             type, NUM_OF_SERVER_TYPES);
 }