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

net/tools/quic/quic_http_response_cache.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_http_response_cache.h"
 
 #include <utility>
 
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "net/http/http_util.h"
-#include "net/quic/core/quic_bug_tracker.h"
+#include "net/quic/platform/api/quic_bug_tracker.h"
 #include "net/quic/platform/api/quic_text_utils.h"
 #include "net/spdy/spdy_http_utils.h"
 
 using base::FilePath;
 using base::IntToString;
 using base::StringPiece;
 using std::string;
 
 namespace net {
 
@@ skipping 354 matching lines @@
   for (auto it = resource_range.first; it != resource_range.second; ++it) {
     ServerPushInfo push_resource = it->second;
     if (push_resource.request_url.spec() == resource.request_url.spec()) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace net