Move quic_bug_tracker to quic/platform. No functional change expected.

net/quic/core/quic_buffered_packet_store.cc

 // Copyright (c) 2016 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/core/quic_buffered_packet_store.h"
 
 #include "base/stl_util.h"
-#include "net/quic/core/quic_bug_tracker.h"
 #include "net/quic/core/quic_flags.h"
+#include "net/quic/platform/api/quic_bug_tracker.h"
 
 using base::ContainsKey;
 
 namespace net {
 
 typedef QuicBufferedPacketStore::BufferedPacket BufferedPacket;
 typedef QuicBufferedPacketStore::BufferedPacketList BufferedPacketList;
 typedef QuicBufferedPacketStore::EnqueuePacketResult EnqueuePacketResult;
 
 // Max number of connections this store can keep track.
@@ skipping 195 matching lines @@
   DCHECK(!packets.empty()) << "Try to deliver connectons without CHLO";
   return packets;
 }
 
 bool QuicBufferedPacketStore::HasChloForConnection(
     QuicConnectionId connection_id) {
   return ContainsKey(connections_with_chlo_, connection_id);
 }
 
 }  // namespace net