Fix and refactor downloaded file handling in the loading stack

content/browser/loader/test_url_loader_client.h

 // Copyright 2016 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_LOADER_TEST_URL_LOADER_CLIENT_H_
 #define CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
@@ skipping 10 matching lines @@
 
 // A TestURLLoaderClient records URLLoaderClient function calls. It also calls
 // the closure set via set_quit_closure if set, in order to make it possible to
 // create a base::RunLoop, set its quit closure to this client and then run the
 // RunLoop.
 class TestURLLoaderClient final : public mojom::URLLoaderClient {
  public:
   TestURLLoaderClient();
   ~TestURLLoaderClient() override;
 
-  void OnReceiveResponse(const ResourceResponseHead& response_head) override;
+  void OnReceiveResponse(const ResourceResponseHead& response_head,
+                         mojom::DownloadedTempFilePtr downloaded_file) override;
   void OnReceiveRedirect(const net::RedirectInfo& redirect_info,
                          const ResourceResponseHead& response_head) override;
   void OnDataDownloaded(int64_t data_length, int64_t encoded_length) override;
   void OnStartLoadingResponseBody(
       mojo::ScopedDataPipeConsumerHandle body) override;
   void OnComplete(const ResourceRequestCompletionStatus& status) override;
 
   bool has_received_response() const { return has_received_response_; }
   bool has_received_redirect() const { return has_received_redirect_; }
   bool has_data_downloaded() const { return has_data_downloaded_; }
@@ skipping 42 matching lines @@
   mojom::URLLoaderFactoryPtr url_loader_factory_;
   int64_t download_data_length_ = 0;
   int64_t encoded_download_data_length_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(TestURLLoaderClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_