Add control to use If-Range header for range request.

content/public/browser/download_url_parameters.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_PUBLIC_BROWSER_DOWNLOAD_URL_PARAMETERS_H_
 #define CONTENT_PUBLIC_BROWSER_DOWNLOAD_URL_PARAMETERS_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 109 matching lines @@
   void set_last_modified(const std::string& last_modified) {
     last_modified_ = last_modified;
   }
 
   // If this is a request for resuming an HTTP/S download, |etag| should be the
   // last seen Etag response header.
   void set_etag(const std::string& etag) {
     etag_ = etag;
   }
 
+  // If the "If-Range" header is used in a partial request.
+  void set_use_if_range(bool use_if_range) { use_if_range_ = use_if_range; }
+
   // HTTP method to use.
   void set_method(const std::string& method) {
     method_ = method;
   }
 
   // Body of the HTTP POST request.
   void set_post_body(const std::string& post_body) {
     post_body_ = post_body;
   }
 
@@ skipping 72 matching lines @@
   // fail.
   void set_blob_data_handle(
       std::unique_ptr<storage::BlobDataHandle> blob_data_handle) {
     blob_data_handle_ = std::move(blob_data_handle);
   }
 
   const OnStartedCallback& callback() const { return callback_; }
   bool content_initiated() const { return content_initiated_; }
   const std::string& last_modified() const { return last_modified_; }
   const std::string& etag() const { return etag_; }
+  bool use_if_range() const { return use_if_range_; }
   const std::string& method() const { return method_; }
   const std::string& post_body() const { return post_body_; }
   int64_t post_id() const { return post_id_; }
   bool prefer_cache() const { return prefer_cache_; }
   const Referrer& referrer() const { return referrer_; }
   const std::string& referrer_encoding() const { return referrer_encoding_; }
   const base::Optional<url::Origin>& initiator() const { return initiator_; }
 
   // These will be -1 if the request is not associated with a frame. See
   // the constructors for more.
@@ skipping 30 matching lines @@
   // STATE CHANGING: All save_info_ sub-objects will be in an indeterminate
   // state following this call.
   DownloadSaveInfo GetSaveInfo() { return std::move(save_info_); }
 
  private:
   OnStartedCallback callback_;
   bool content_initiated_;
   RequestHeadersType request_headers_;
   std::string last_modified_;
   std::string etag_;
+  bool use_if_range_;
   std::string method_;
   std::string post_body_;
   int64_t post_id_;
   bool prefer_cache_;
   Referrer referrer_;
   base::Optional<url::Origin> initiator_;
   std::string referrer_encoding_;
   int render_process_host_id_;
   int render_view_host_routing_id_;
   int render_frame_host_routing_id_;
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
   DownloadSaveInfo save_info_;
   GURL url_;
   bool do_not_prompt_for_login_;
   std::unique_ptr<storage::BlobDataHandle> blob_data_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadUrlParameters);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DOWNLOAD_URL_PARAMETERS_H_