Refactoring DownloadManager::DownloadURL to add proper annotation.

content/browser/download/download_request_core.h

 // 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.
 
 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_REQUEST_CORE_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_REQUEST_CORE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/loader/resource_handler.h"
 #include "content/public/browser/download_interrupt_reasons.h"
 #include "content/public/browser/download_save_info.h"
 #include "content/public/browser/download_url_parameters.h"
 #include "device/wake_lock/public/interfaces/wake_lock_service.mojom.h"
+#include "net/traffic_annotation/network_traffic_annotation.h"
 
 namespace net {
 class HttpResponseHeaders;
 class URLRequest;
 class URLRequestStatus;
 }  // namespace net
 
 namespace content {
 class ByteStreamReader;
 class ByteStreamWriter;
@@ skipping 66 matching lines @@
   // Balances a call to PauseRequest(). If no more pauses are outstanding and
   // the reader end of the ByteStream is ready to receive more data,
   // DownloadRequestCore will invoke the |on_ready_to_read_callback| to signal
   // to the caller that the read cycles should commence.
   void ResumeRequest();
 
   std::string DebugString() const;
 
   static std::unique_ptr<net::URLRequest> CreateRequestOnIOThread(
       uint32_t download_id,
-      DownloadUrlParameters* params);
+      DownloadUrlParameters* params,
+      const net::NetworkTrafficAnnotationTag& traffic_annotation);
 
   // Size of the buffer used between the DownloadRequestCore and the
   // downstream receiver of its output.
   static const int kDownloadByteStreamSize;
 
  protected:
   net::URLRequest* request() const { return request_; }
 
  private:
   static DownloadInterruptReason HandleRequestStatus(
@@ skipping 50 matching lines @@
 
   // Each successful OnWillRead will yield a buffer of this size.
   static const int kReadBufSize = 32768;   // bytes
 
   DISALLOW_COPY_AND_ASSIGN(DownloadRequestCore);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_REQUEST_CORE_H_