Simplify DownloadRequestHandle by using WebContentsGetter

content/browser/download/download_create_info.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_CREATE_INFO_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_CREATE_INFO_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 15 matching lines @@
 
 // Used for informing the download manager of a new download, since we don't
 // want to pass |DownloadItem|s between threads.
 struct CONTENT_EXPORT DownloadCreateInfo {
   DownloadCreateInfo(const base::Time& start_time,
                      const net::BoundNetLog& bound_net_log,
                      scoped_ptr<DownloadSaveInfo> save_info);
   DownloadCreateInfo();
   ~DownloadCreateInfo();
 
-  std::string DebugString() const;
-
   // The URL from which we are downloading. This is the final URL after any
   // redirection by the server for |url_chain|.
   const GURL& url() const;
 
   // The ID of the download.
   uint32_t download_id;
 
   // The chain of redirects that leading up to and including the final URL.
   std::vector<GURL> url_chain;
 
@@ skipping 60 matching lines @@
   // For continuing a download, the ETag of the file.
   std::string etag;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadCreateInfo);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_CREATE_INFO_H_