Delete Tracked, and move Location to its own file.

net/disk_cache/in_flight_io.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/in_flight_io.h"
 
+#include "base/location.h"
 #include "base/logging.h"
 
 namespace disk_cache {
 
 BackgroundIO::BackgroundIO(InFlightIO* controller)
     : controller_(controller), result_(-1), io_completed_(true, false) {
 }
 
 // Runs on the primary thread.
 void BackgroundIO::OnIOSignalled() {
@@ skipping 61 matching lines @@
   OnOperationComplete(operation, cancel_task);
 }
 
 // Runs on the primary thread.
 void InFlightIO::OnOperationPosted(BackgroundIO* operation) {
   DCHECK(callback_thread_->BelongsToCurrentThread());
   io_list_.insert(make_scoped_refptr(operation));
 }
 
 }  // namespace disk_cache