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

components/metrics/net/net_metrics_log_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 "components/metrics/net/net_metrics_log_uploader.h"
 
 #include "base/metrics/histogram.h"
 #include "net/base/load_flags.h"
 #include "net/base/network_change_notifier.h"
 #include "net/url_request/url_fetcher.h"
@@ skipping 21 matching lines @@
     const base::Callback<void(int)>& on_upload_complete)
     : MetricsLogUploader(server_url, mime_type, on_upload_complete),
       request_context_getter_(request_context_getter) {
 }
 
 NetMetricsLogUploader::~NetMetricsLogUploader() {
 }
 
 bool NetMetricsLogUploader::UploadLog(const std::string& compressed_log_data,
                                       const std::string& log_hash) {
-  current_fetch_.reset(
-      net::URLFetcher::Create(GURL(server_url_), net::URLFetcher::POST, this));
+  current_fetch_ =
+      net::URLFetcher::Create(GURL(server_url_), net::URLFetcher::POST, this);
   current_fetch_->SetRequestContext(request_context_getter_);
   current_fetch_->SetUploadData(mime_type_, compressed_log_data);
 
   // Tell the server that we're uploading gzipped protobufs.
   current_fetch_->SetExtraRequestHeaders("content-encoding: gzip");
 
   DCHECK(!log_hash.empty());
   current_fetch_->AddExtraRequestHeader("X-Chrome-UMA-Log-SHA1: " + log_hash);
 
   // We already drop cookies server-side, but we might as well strip them out
@@ skipping 12 matching lines @@
 
   int response_code = source->GetResponseCode();
   if (response_code == net::URLFetcher::RESPONSE_CODE_INVALID)
     response_code = -1;
   current_fetch_.reset();
   RecordConnectionType(response_code);
   on_upload_complete_.Run(response_code);
 }
 
 }  // namespace metrics