Make SimpleEntryImpl ref counted.

net/disk_cache/simple/simple_index.cc

 // 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.
 
 #include "net/disk_cache/simple/simple_index.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 63 matching lines @@
     const scoped_refptr<base::TaskRunner>& io_thread,
     const base::FilePath& path)
     : cache_size_(0),
       initialized_(false),
       index_filename_(path.AppendASCII("simple-index")),
       cache_thread_(cache_thread),
       io_thread_(io_thread) {}
 
 SimpleIndex::~SimpleIndex() {
   DCHECK(io_thread_checker_.CalledOnValidThread());
-
 }
 
 void SimpleIndex::Initialize() {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   IndexCompletionCallback merge_callback =
-      base::Bind(&SimpleIndex::MergeInitializingSet, AsWeakPtr());
+      base::Bind(&SimpleIndex::MergeInitializingSet, this);
   base::WorkerPool::PostTask(FROM_HERE,
                              base::Bind(&SimpleIndex::LoadFromDisk,
                                         index_filename_,
                                         io_thread_,
                                         merge_callback),
                              true);
 }
 
 void SimpleIndex::Insert(const std::string& key) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
@@ skipping 179 matching lines @@
                                                 cache_size_);
   scoped_ptr<Pickle> pickle = SimpleIndexFile::Serialize(index_metadata,
                                                          entries_set_);
   cache_thread_->PostTask(FROM_HERE, base::Bind(
       &SimpleIndex::WriteToDiskInternal,
       index_filename_,
       base::Passed(&pickle)));
 }
 
 }  // namespace disk_cache