Change scoped_ptr to std::unique_ptr in //net/disk_cache.

net/disk_cache/blockfile/disk_cache_perftest.cc

 // Copyright (c) 2011 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 <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/hash.h"
 #include "base/strings/string_util.h"
@@ skipping 145 matching lines @@
   timer.Done();
 }
 
 TEST_F(DiskCacheTest, CacheBackendPerformance) {
   base::Thread cache_thread("CacheThread");
   ASSERT_TRUE(cache_thread.StartWithOptions(
                   base::Thread::Options(base::MessageLoop::TYPE_IO, 0)));
 
   ASSERT_TRUE(CleanupCacheDir());
   net::TestCompletionCallback cb;
-  scoped_ptr<disk_cache::Backend> cache;
+  std::unique_ptr<disk_cache::Backend> cache;
   int rv = disk_cache::CreateCacheBackend(net::DISK_CACHE,
                                           net::CACHE_BACKEND_BLOCKFILE,
                                           cache_path_,
                                           0,
                                           false,
                                           cache_thread.task_runner(),
                                           NULL,
                                           &cache,
                                           cb.callback());
 
@@ skipping 74 matching lines @@
 
     files.DeleteBlock(address[entry], false);
     EXPECT_TRUE(files.CreateBlock(disk_cache::RANKINGS, BlockSize(),
                                   &address[entry]));
   }
 
   timer2.Done();
   base::MessageLoop::current()->RunUntilIdle();
   delete[] address;
 }