Separate Simple Backend creation from initialization.

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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/message_loop.h"
 #include "base/task_runner.h"
@@ skipping 27 matching lines @@
 
 }  // namespace
 
 namespace disk_cache {
 
 SimpleIndex::SimpleIndex(
     const scoped_refptr<base::TaskRunner>& cache_thread,
     const base::FilePath& path)
     : path_(path),
       cache_thread_(cache_thread) {
-  index_filename_ = path_.AppendASCII("simple-index");
+  index_filename_ = path_.AppendASCII("index");
 }
 
 bool SimpleIndex::Initialize() {
   if (!OpenIndexFile())
     return RestoreFromDisk();
   uLong incremental_crc = crc32(0L, Z_NULL, 0);
   int64 index_file_offset = 0;
   SimpleIndexFile::Header metadata;
   if (base::ReadPlatformFile(index_file_,
                              index_file_offset,
@@ skipping 163 matching lines @@
     file_util::Delete(temp_filename, /* recursive = */ false);
     return;
   }
 
   // Swap temp and index_file.
   bool result = file_util::ReplaceFile(temp_filename, index_filename);
   DCHECK(result);
 }
 
 }  // namespace disk_cache