Make SimpleEntryImpl ref counted.

net/disk_cache/simple/simple_synchronous_entry.h

 // Copyright (c) 2013 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_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_
 #define NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
@@ skipping 42 matching lines @@
       const std::string& key,
       const scoped_refptr<base::TaskRunner>& callback_runner,
       const SynchronousCreationCallback& callback);
 
   // Deletes an entry without first Opening it. Does not check if there is
   // already an Entry object in memory holding the open files. Be careful! This
   // is meant to be used by the Backend::DoomEntry() call. |callback| will be
   // run by |callback_runner|.
   static void DoomEntry(const base::FilePath& path,
                         const std::string& key,
-                        scoped_refptr<base::TaskRunner> callback_runner,
+                        const scoped_refptr<base::TaskRunner>& callback_runner,

[rvargas (doing something else), 2013/04/17 19:56:38]

this should be a plain pointer

                         const net::CompletionCallback& callback);
 
   // N.B. Close(), ReadData() and WriteData() may block on IO.
   void Close();
   void ReadData(int index,
                 int offset,
                 net::IOBuffer* buf,
                 int buf_len,
                 const SynchronousOperationCallback& callback);
   void WriteData(int index,
@@ skipping 41 matching lines @@
   base::Time last_used_;
   base::Time last_modified_;
   int32 data_size_[kSimpleEntryFileCount];
 
   base::PlatformFile files_[kSimpleEntryFileCount];
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_