Initialize the simple cache backend at runtime.

net/disk_cache/simple/simple_backend_impl.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_BACKEND_IMPL_H_
 #define NET_DISK_CACHE_SIMPLE_SIMPLE_BACKEND_IMPL_H_
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/task_runner.h"
 #include "net/base/cache_type.h"
 #include "net/disk_cache/disk_cache.h"
 
 namespace disk_cache {
 
 // SimpleBackendImpl is a new cache backend that stores entries in individual
 // files.
 
 // It is currently a work in progress, missing many features of a real cache,
 // such as eviction.
 
 // See http://www.chromium.org/developers/design-documents/network-stack/disk-cache/very-simple-backend
 
 class SimpleIndex;
 
-class SimpleBackendImpl : public Backend {
+class NET_EXPORT_PRIVATE SimpleBackendImpl : public Backend {
  public:
   virtual ~SimpleBackendImpl();
 
   static int CreateBackend(const base::FilePath& full_path,
-                           bool force,
                            int max_bytes,
                            net::CacheType type,
                            uint32 flags,
                            scoped_refptr<base::TaskRunner> cache_thread,
                            net::NetLog* net_log,
                            Backend** backend,
                            const CompletionCallback& callback);
 
   // From Backend:
   virtual net::CacheType GetCacheType() const OVERRIDE;
@@ skipping 35 matching lines @@
   void Initialize();
 
   const base::FilePath path_;
 
   scoped_ptr<SimpleIndex> index_;
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_BACKEND_IMPL_H_