Delete Tracked, and move Location to its own file.

net/disk_cache/file_posix.cc

 // Copyright (c) 2011 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/disk_cache/file.h"
 
 #include <fcntl.h>
 
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/threading/worker_pool.h"
 #include "net/base/net_errors.h"
 #include "net/disk_cache/disk_cache.h"
 #include "net/disk_cache/in_flight_io.h"
 
 namespace {
 
 // This class represents a single asynchronous IO operation while it is being
 // bounced between threads.
@@ skipping 273 matching lines @@
     return false;
 
   GetFileInFlightIO()->PostWrite(this, buffer, buffer_len, offset, callback);
 
   if (completed)
     *completed = false;
   return true;
 }
 
 }  // namespace disk_cache