Disk Cache: Improve handling of dirty entries.

net/disk_cache/in_flight_backend_io.h

 // 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.
 
 #ifndef NET_DISK_CACHE_IN_FLIGHT_BACKEND_IO_H_
 #define NET_DISK_CACHE_IN_FLIGHT_BACKEND_IO_H_
 #pragma once
 
 #include <list>
 #include <string>
 
 #include "base/message_loop_proxy.h"
+#include "base/time.h"
 #include "net/base/completion_callback.h"
 #include "net/base/io_buffer.h"
-#include "net/disk_cache/entry_impl.h"
 #include "net/disk_cache/in_flight_io.h"
 
 namespace disk_cache {
 
 class BackendImpl;
+class Entry;
+class EntryImpl;
 
 // This class represents a single asynchronous disk cache IO operation while it
 // is being bounced between threads.
 class BackendIO : public BackgroundIO {
  public:
   BackendIO(InFlightIO* controller, BackendImpl* backend,
             net::CompletionCallback* callback);
 
   // Runs the actual operation on the background thread.
   void ExecuteOperation();
@@ skipping 168 matching lines @@
 
   BackendImpl* backend_;
   scoped_refptr<base::MessageLoopProxy> background_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(InFlightBackendIO);
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_IN_FLIGHT_BACKEND_IO_H_