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

net/quic/core/quic_unacked_packet_map.cc

 // Copyright 2014 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_unacked_packet_map.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
-#include "net/quic/core/quic_bug_tracker.h"
 #include "net/quic/core/quic_connection_stats.h"
 #include "net/quic/core/quic_utils.h"
+#include "net/quic/platform/api/quic_bug_tracker.h"
 
 namespace net {
 
 QuicUnackedPacketMap::QuicUnackedPacketMap()
     : largest_sent_packet_(0),
       largest_sent_retransmittable_packet_(0),
       largest_observed_(0),
       least_unacked_(1),
       bytes_in_flight_(0),
       pending_crypto_packet_count_(0) {}
@@ skipping 323 matching lines @@
     }
   }
   return false;
 }
 
 QuicPacketNumber QuicUnackedPacketMap::GetLeastUnacked() const {
   return least_unacked_;
 }
 
 }  // namespace net