Moves QuicTag typedefs, and QuicTag utility methods to quic_tag.{h,cc}. No behavior change.

net/tools/quic/quic_dispatcher.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/tools/quic/quic_dispatcher.h"
 
 #include <utility>
 
 #include "base/debug/stack_trace.h"
 #include "base/logging.h"
@@ skipping 531 matching lines @@
 bool QuicDispatcher::ShouldCreateSessionForUnknownVersion(QuicTag version_tag) {
   return false;
 }
 
 bool QuicDispatcher::OnProtocolVersionMismatch(
     QuicVersion /*received_version*/) {
   QUIC_BUG_IF(!time_wait_list_manager_->IsConnectionIdInTimeWait(
                   current_connection_id_) &&
               !ShouldCreateSessionForUnknownVersion(framer_.last_version_tag()))
       << "Unexpected version mismatch: "
-      << QuicUtils::TagToString(framer_.last_version_tag());
+      << QuicTagToString(framer_.last_version_tag());
 
   // Keep processing after protocol mismatch - this will be dealt with by the
   // time wait list or connection that we will create.
   return true;
 }
 
 void QuicDispatcher::OnPublicResetPacket(
     const QuicPublicResetPacket& /*packet*/) {
   DCHECK(false);
 }
@@ skipping 422 matching lines @@
 void QuicDispatcher::DeliverPacketsToSession(
     const std::list<BufferedPacket>& packets,
     QuicSession* session) {
   for (const BufferedPacket& packet : packets) {
     session->ProcessUdpPacket(packet.server_address, packet.client_address,
                               *(packet.packet));
   }
 }
 
 }  // namespace net