Change the API of disk_cache::CreateCacheBackend to use scoped_ptr

net/http/http_cache_unittest.cc

 // 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.
 
 #include "net/http/http_cache.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 1906 matching lines @@
 
   // Just to make sure that everything is still pending.
   base::MessageLoop::current()->RunUntilIdle();
 
   // The request should be creating the disk cache.
   EXPECT_FALSE(c->callback.have_result());
 
   // We cannot call FinishCreation because the factory itself will go away with
   // the cache, so grab the callback and attempt to use it.
   net::CompletionCallback callback = factory->callback();
-  disk_cache::Backend** backend = factory->backend();
+  scoped_ptr<disk_cache::Backend>* backend = factory->backend();
 
   cache.reset();
   base::MessageLoop::current()->RunUntilIdle();
 
-  *backend = NULL;
+  backend->reset();
   callback.Run(net::ERR_ABORTED);
 }
 
 // Tests that we can delete the cache while creating the backend, from within
 // one of the callbacks.
 TEST(HttpCache, DeleteCacheWaitingForBackend2) {
   MockBlockingBackendFactory* factory = new MockBlockingBackendFactory();
   MockHttpCache* cache = new MockHttpCache(factory);
 
   DeleteCacheCompletionCallback cb(cache);
@@ skipping 4051 matching lines @@
   trans->SetPriority(net::HIGHEST);
   // Should trigger a new network transaction and pick up the new
   // priority.
   ReadAndVerifyTransaction(trans.get(), transaction);
 
   EXPECT_EQ(net::HIGHEST,
             cache.network_layer()->last_create_transaction_priority());
 
   RemoveMockTransaction(&kRangeGET_TransactionOK);
 }