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

components/precache/core/precache_fetcher.cc

 // Copyright 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.
 
 #include "components/precache/core/precache_fetcher.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 103 matching lines @@
   const base::Callback<void(const URLFetcher&)> callback_;
   scoped_ptr<URLFetcher> url_fetcher_;
 
   DISALLOW_COPY_AND_ASSIGN(Fetcher);
 };
 
 PrecacheFetcher::Fetcher::Fetcher(
     net::URLRequestContextGetter* request_context, const GURL& url,
     const base::Callback<void(const URLFetcher&)>& callback)
     : callback_(callback) {
-  url_fetcher_.reset(URLFetcher::Create(url, URLFetcher::GET, this));
+  url_fetcher_ = URLFetcher::Create(url, URLFetcher::GET, this);
   url_fetcher_->SetRequestContext(request_context);
   url_fetcher_->Start();
 }
 
 void PrecacheFetcher::Fetcher::OnURLFetchComplete(const URLFetcher* source) {
   callback_.Run(*source);
 }
 
 PrecacheFetcher::PrecacheFetcher(
     const std::list<GURL>& starting_urls,
@@ skipping 112 matching lines @@
   StartNextFetch();
 }
 
 void PrecacheFetcher::OnResourceFetchComplete(const URLFetcher& source) {
   // The resource has already been put in the cache during the fetch process, so
   // nothing more needs to be done for the resource.
   StartNextFetch();
 }
 
 }  // namespace precache