Extracting NetLog inner classes into their own classes.

content/browser/download/save_file.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_SAVE_FILE_H_
 #define CONTENT_BROWSER_DOWNLOAD_SAVE_FILE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
+#include <string>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "content/browser/download/base_file.h"
 #include "content/browser/download/save_types.h"
 
 namespace content {
 // SaveFile ----------------------------------------------------------------
 
 // These objects live exclusively on the file thread and handle the writing
@@ skipping 30 matching lines @@
  private:
   BaseFile file_;
   std::unique_ptr<const SaveFileCreateInfo> info_;
 
   DISALLOW_COPY_AND_ASSIGN(SaveFile);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_SAVE_FILE_H_