Adjust URLFetcher::Create API so that object is returned as scoped_ptr.

chrome/browser/safe_browsing/malware_details_cache.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.
 //
 // Implementation of the MalwareDetails class.
 
 #include "chrome/browser/safe_browsing/malware_details.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
@@ skipping 60 matching lines @@
     AllDone(true);
     return;
   }
 
   if (!request_context_getter_.get()) {
     DVLOG(1) << "Missing request context getter";
     AllDone(false);
     return;
   }
 
-  current_fetch_.reset(net::URLFetcher::Create(
-      GURL(resources_it_->first), net::URLFetcher::GET, this));
+  current_fetch_ = net::URLFetcher::Create(GURL(resources_it_->first),
+                                           net::URLFetcher::GET, this);
   current_fetch_->SetRequestContext(request_context_getter_.get());
   // Only from cache, and don't save cookies.
   current_fetch_->SetLoadFlags(net::LOAD_ONLY_FROM_CACHE |
                                net::LOAD_DO_NOT_SAVE_COOKIES);
   current_fetch_->SetAutomaticallyRetryOn5xx(false);  // No retries.
   current_fetch_->Start();  // OnURLFetchComplete will be called when done.
 }
 
 ClientMalwareReportRequest::Resource* MalwareDetailsCacheCollector::GetResource(
     const GURL& url) {
@@ skipping 102 matching lines @@
       base::Bind(&MalwareDetailsCacheCollector::OpenEntry, this));
 }
 
 void MalwareDetailsCacheCollector::AllDone(bool success) {
   DVLOG(1) << "AllDone";
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   *result_ = success;
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE, callback_);
   callback_.Reset();
 }