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

chrome/browser/tracing/crash_service_uploader.cc

 // Copyright 2014 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 "chrome/browser/tracing/crash_service_uploader.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/format_macros.h"
@@ skipping 238 matching lines @@
 void TraceCrashServiceUploader::CreateAndStartURLFetcher(
     const std::string& upload_url,
     const std::string& post_data) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   DCHECK(!url_fetcher_.get());
 
   std::string content_type = kUploadContentType;
   content_type.append("; boundary=");
   content_type.append(kMultipartBoundary);
 
-  url_fetcher_.reset(
-      net::URLFetcher::Create(GURL(upload_url), net::URLFetcher::POST, this));
+  url_fetcher_ =
+      net::URLFetcher::Create(GURL(upload_url), net::URLFetcher::POST, this);
   url_fetcher_->SetRequestContext(request_context_);
   url_fetcher_->SetUploadData(content_type, post_data);
   url_fetcher_->Start();
 }