Low-impact. Dispatcher now uses QuicServerSession, not QuicSession.

net/tools/quic/quic_dispatcher.cc

Index: net/tools/quic/quic_dispatcher.cc
diff --git a/net/tools/quic/quic_dispatcher.cc b/net/tools/quic/quic_dispatcher.cc
index 363a2cb10294f960b3ba15fab87b7b233f4aafdc..9e7dda5ecd9b6e748460a5b0b3976f0368c61568 100644
--- a/net/tools/quic/quic_dispatcher.cc
+++ b/net/tools/quic/quic_dispatcher.cc
@@ -217,7 +217,7 @@ bool QuicDispatcher::OnUnauthenticatedPublicHeader(
 
   // The session that we have identified as the one to which this packet
   // belongs.
-  QuicSession* session = nullptr;
+  QuicServerSession* session = nullptr;
   QuicConnectionId connection_id = header.connection_id;
   SessionMap::iterator it = session_map_.find(connection_id);
   if (it == session_map_.end()) {
@@ -264,10 +264,10 @@ bool QuicDispatcher::OnUnauthenticatedPublicHeader(
   return false;
 }
 
-QuicSession* QuicDispatcher::AdditionalValidityChecksThenCreateSession(
+QuicServerSession* QuicDispatcher::AdditionalValidityChecksThenCreateSession(
     const QuicPacketPublicHeader& header,
     QuicConnectionId connection_id) {
-  QuicSession* session = CreateQuicSession(
+  QuicServerSession* session = CreateQuicSession(
       connection_id, current_server_address_, current_client_address_);
 
   if (session == nullptr) {
@@ -340,7 +340,7 @@ bool QuicDispatcher::HasPendingWrites() const {
 
 void QuicDispatcher::Shutdown() {
   while (!session_map_.empty()) {
-    QuicSession* session = session_map_.begin()->second;
+    QuicServerSession* session = session_map_.begin()->second;
     session->connection()->SendConnectionClose(QUIC_PEER_GOING_AWAY);
     // Validate that the session removes itself from the session map on close.
     DCHECK(session_map_.empty() || session_map_.begin()->second != session);
@@ -398,11 +398,11 @@ QuicPacketWriter* QuicDispatcher::CreateWriter(int fd) {
   return new QuicDefaultPacketWriter(fd);
 }
 
-QuicSession* QuicDispatcher::CreateQuicSession(
+QuicServerSession* QuicDispatcher::CreateQuicSession(
     QuicConnectionId connection_id,
     const IPEndPoint& server_address,
     const IPEndPoint& client_address) {
-  // The QuicSession takes ownership of |connection| below.
+  // The QuicServerSession takes ownership of |connection| below.
   QuicConnection* connection = new QuicConnection(
       connection_id, client_address, helper_.get(), connection_writer_factory_,
       /* owns_writer= */ true, Perspective::IS_SERVER,