Refactoring DownloadManager::DownloadURL to add proper annotation.

content/browser/download/download_worker.cc

 // Copyright 2017 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 "content/browser/download/download_worker.h"
 
 #include "content/browser/download/download_create_info.h"
 #include "content/public/browser/download_interrupt_reasons.h"
 #include "content/public/browser/web_contents.h"
+#include "net/traffic_annotation/network_traffic_annotation.h"
 
 namespace content {
 namespace {
 
 const int kVerboseLevel = 1;
 
 class CompletedByteStreamReader : public ByteStreamReader {
  public:
   CompletedByteStreamReader(int status) : status_(status) {};
   ~CompletedByteStreamReader() override = default;
@@ skipping 11 matching lines @@
 };
 
 std::unique_ptr<UrlDownloader, BrowserThread::DeleteOnIOThread>
 CreateUrlDownloader(std::unique_ptr<DownloadUrlParameters> params,
                     base::WeakPtr<UrlDownloader::Delegate> delegate) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   // Build the URLRequest, BlobDataHandle is hold in original request for image
   // download.
   std::unique_ptr<net::URLRequest> url_request =
-      DownloadRequestCore::CreateRequestOnIOThread(DownloadItem::kInvalidId,
-                                                   params.get());
+      DownloadRequestCore::CreateRequestOnIOThread(
+          DownloadItem::kInvalidId, params.get(), NO_TRAFFIC_ANNOTATION_YET);
 
   return std::unique_ptr<UrlDownloader, BrowserThread::DeleteOnIOThread>(
       UrlDownloader::BeginDownload(delegate, std::move(url_request),
                                    params->referrer(), true)
           .release());
 }
 
 }  // namespace
 
 DownloadWorker::DownloadWorker(DownloadWorker::Delegate* delegate,
@@ skipping 77 matching lines @@
   url_downloader_.reset();
 }
 
 void DownloadWorker::AddUrlDownloader(
     std::unique_ptr<UrlDownloader, BrowserThread::DeleteOnIOThread>
         downloader) {
   url_downloader_ = std::move(downloader);
 }
 
 }  // namespace content