Adding histogram to count number of RTTs for handshake when confirmation is required.

net/quic/quic_client_session.cc

 // Copyright (c) 2012 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 "net/quic/quic_client_session.h"
 
 #include "base/callback_helpers.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
@@ skipping 221 matching lines @@
 
   bool port_selected = stream_factory_->enable_port_selection();
   SSLInfo ssl_info;
   if (!GetSSLInfo(&ssl_info) || !ssl_info.cert) {
     if (port_selected) {
       UMA_HISTOGRAM_CUSTOM_COUNTS("Net.QuicSession.ConnectSelectPortForHTTP",
                                   round_trip_handshakes, 0, 3, 4);
     } else {
       UMA_HISTOGRAM_CUSTOM_COUNTS("Net.QuicSession.ConnectRandomPortForHTTP",
                                   round_trip_handshakes, 0, 3, 4);
+      if (require_confirmation_) {
+        UMA_HISTOGRAM_CUSTOM_COUNTS(
+            "Net.QuicSession.ConnectRandomPortRequiringConfirmationForHTTP",
+            round_trip_handshakes, 0, 3, 4);
+      }
     }
   } else {
     if (port_selected) {
       UMA_HISTOGRAM_CUSTOM_COUNTS("Net.QuicSession.ConnectSelectPortForHTTPS",
                                   round_trip_handshakes, 0, 3, 4);
     } else {
       UMA_HISTOGRAM_CUSTOM_COUNTS("Net.QuicSession.ConnectRandomPortForHTTPS",
                                   round_trip_handshakes, 0, 3, 4);
+      if (require_confirmation_) {
+        UMA_HISTOGRAM_CUSTOM_COUNTS(
+            "Net.QuicSession.ConnectRandomPortRequiringConfirmationForHTTPS",
+            round_trip_handshakes, 0, 3, 4);
+      }
     }
   }
   const QuicConnectionStats stats = connection()->GetStats();
   if (stats.max_sequence_reordering == 0)
     return;
   const uint64 kMaxReordering = 100;
   uint64 reordering = kMaxReordering;
   if (stats.min_rtt_us > 0 ) {
     reordering =
         GG_UINT64_C(100) * stats.max_time_reordering_us / stats.min_rtt_us;
@@ skipping 590 matching lines @@
     return;
 
   // TODO(rch): re-enable this code once beta is cut.
   //  if (stream_factory_)
   //    stream_factory_->OnSessionConnectTimeout(this);
   //  CloseAllStreams(ERR_QUIC_HANDSHAKE_FAILED);
   //  DCHECK_EQ(0u, GetNumOpenStreams());
 }
 
 }  // namespace net