Use proper pair type in range-based for map iterations.

net/quic/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/quic_stream_factory.h"
 
 #include <set>
 
 #include "base/cpu.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 1129 matching lines @@
   if (!server_info)
     return;
 
   QuicCryptoClientConfig::CachedState* cached =
       crypto_config_.LookupOrCreate(server_id);
   if (!cached->IsEmpty())
     return;
 
   if (http_server_properties_) {
     if (quic_supported_servers_at_startup_.empty()) {
-      for (const std::pair<net::HostPortPair, net::AlternateProtocolInfo>&
+      for (const std::pair<const net::HostPortPair, net::AlternateProtocolInfo>&
                key_value : http_server_properties_->alternate_protocol_map()) {
         if (key_value.second.protocol == QUIC) {
           quic_supported_servers_at_startup_.insert(key_value.first);
         }
       }
     }
 
     // TODO(rtenneti): Delete the following histogram after collecting stats.
     // If the AlternateProtocolMap contained an entry for this host, check if
     // the disk cache contained an entry for it.
@@ skipping 72 matching lines @@
   http_server_properties_->ClearAlternateProtocol(server);
   http_server_properties_->SetAlternateProtocol(
       server, alternate.port, alternate.protocol, 1);
   DCHECK_EQ(QUIC,
             http_server_properties_->GetAlternateProtocol(server).protocol);
   DCHECK(http_server_properties_->WasAlternateProtocolRecentlyBroken(
       server));
 }
 
 }  // namespace net