QUIC - Added histograms to track how cache ie performing when server

net/quic/chromium/quic_stream_factory.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/chromium/quic_stream_factory.h"
 
 #include <openssl/aead.h>
 
 #include <algorithm>
 #include <tuple>
@@ skipping 1969 matching lines @@
   if (http_server_properties_->max_server_configs_stored_in_properties() == 0)
     return;
   // Create a temporary QuicServerInfo object to deserialize and to populate the
   // in-memory crypto server config cache in the MRU order.
   std::unique_ptr<QuicServerInfo> server_info;
   CompletionCallback callback;
   // Get the list of servers to be deserialized first because WaitForDataReady
   // touches quic_server_info_map.
   const QuicServerInfoMap& quic_server_info_map =
       http_server_properties_->quic_server_info_map();
-  std::vector<QuicServerId> server_list(quic_server_info_map.size());
+  std::vector<QuicServerId> server_list;
   for (const auto& key_value : quic_server_info_map)
     server_list.push_back(key_value.first);
   for (auto it = server_list.rbegin(); it != server_list.rend(); ++it) {
     const QuicServerId& server_id = *it;
     server_info.reset(quic_server_info_factory_->GetForServer(server_id));
     if (server_info->WaitForDataReady(callback) == OK) {
       DVLOG(1) << "Initialized server config for: " << server_id.ToString();
       InitializeCachedStateInCryptoConfig(server_id, server_info, nullptr);
     }
   }
@@ skipping 36 matching lines @@
   // Since the session was active, there's no longer an
   // HttpStreamFactoryImpl::Job running which can mark it broken, unless the TCP
   // job also fails. So to avoid not using QUIC when we otherwise could, we mark
   // it as recently broken, which means that 0-RTT will be disabled but we'll
   // still race.
   http_server_properties_->MarkAlternativeServiceRecentlyBroken(
       alternative_service);
 }
 
 }  // namespace net