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

net/quic/platform/impl/quic_ip_address_impl.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/platform/impl/quic_ip_address_impl.h"
 
 #include "net/base/address_family.h"
-#include "net/quic/core/quic_bug_tracker.h"
+#include "net/quic/platform/api/quic_bug_tracker.h"
 
 #if defined(OS_WIN)
 #include <winsock2.h>
 #include <ws2bth.h>
 #elif defined(OS_POSIX)
 #include <netinet/in.h>
 #endif
 
 using std::string;
 
@@ skipping 105 matching lines @@
 bool QuicIpAddressImpl::IsIPv6() const {
   return ip_address_.IsIPv6();
 }
 
 bool QuicIpAddressImpl::InSameSubnet(const QuicIpAddressImpl& other,
                                      int subnet_length) {
   return IPAddressMatchesPrefix(ip_address_, other.ip_address(), subnet_length);
 }
 
 }  // namespace net