Allowing multiple SaveItems to have same URLs.

content/browser/download/save_file_resource_handler.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_RESOURCE_HANDLER_H_
 #define CONTENT_BROWSER_DOWNLOAD_SAVE_FILE_RESOURCE_HANDLER_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "content/browser/loader/resource_handler.h"
 #include "url/gurl.h"
 
 namespace net {
 class URLRequest;
 }
 
 namespace content {
 class SaveFileManager;
 
 // Forwards data to the save thread.
 class SaveFileResourceHandler : public ResourceHandler {
  public:
   SaveFileResourceHandler(net::URLRequest* request,
+                          int save_item_id,
                           int save_package_id,
                           int render_process_host_id,
                           int render_frame_routing_id,
                           const GURL& url,
                           SaveFileManager* manager);
   ~SaveFileResourceHandler() override;
 
   // ResourceHandler Implementation:
 
   // Saves the redirected URL to final_url_, we need to use the original
@@ skipping 30 matching lines @@
   // If the content-length header is not present (or contains something other
   // than numbers), StringToInt64 returns 0, which indicates 'unknown size' and
   // is handled correctly by the SaveManager.
   void set_content_length(const std::string& content_length);
 
   void set_content_disposition(const std::string& content_disposition) {
     content_disposition_ = content_disposition;
   }
 
  private:
-  int save_id_;
+  int save_item_id_;
   int save_package_id_;
   int render_process_id_;
   int render_frame_routing_id_;
   scoped_refptr<net::IOBuffer> read_buffer_;
   std::string content_disposition_;
   GURL url_;
   GURL final_url_;
   int64 content_length_;
   SaveFileManager* save_manager_;
 
   static const int kReadBufSize = 32768;  // bytes
 
   DISALLOW_COPY_AND_ASSIGN(SaveFileResourceHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_SAVE_FILE_RESOURCE_HANDLER_H_