Change the API of disk_cache::CreateCacheBackend to use scoped_ptr

net/disk_cache/disk_cache_test_base.h

 // Copyright (c) 2012 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_DISK_CACHE_TEST_BASE_H_
 #define NET_DISK_CACHE_DISK_CACHE_TEST_BASE_H_
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 128 matching lines @@
 
   // Makes sure that some time passes before continuing the test. Time::Now()
   // before and after this method will not be the same.
   void AddDelay();
 
   // DiskCacheTest:
   virtual void TearDown() OVERRIDE;
 
   // cache_ will always have a valid object, regardless of how the cache was
   // initialized. The implementation pointers can be NULL.
-  disk_cache::Backend* cache_;
+  scoped_ptr<disk_cache::Backend> cache_;
   disk_cache::BackendImpl* cache_impl_;
   disk_cache::SimpleBackendImpl* simple_cache_impl_;
   disk_cache::MemBackendImpl* mem_cache_;
 
   uint32 mask_;
   int size_;
   net::CacheType type_;
   bool memory_only_;
   bool simple_cache_mode_;
   bool simple_cache_wait_for_index_;
   bool force_creation_;
   bool new_eviction_;
   bool first_cleanup_;
   bool integrity_;
   bool use_current_thread_;
   // This is intentionally left uninitialized, to be used by any test.
   bool success_;
 
  private:
   void InitMemoryCache();
   void InitDiskCache();
 
   base::Thread cache_thread_;
   DISALLOW_COPY_AND_ASSIGN(DiskCacheTestWithCache);
 };
 
 #endif  // NET_DISK_CACHE_DISK_CACHE_TEST_BASE_H_