Switch to use net::FilterSourceStream from net::Filter

net/url_request/url_request_file_job.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 NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_
 #define NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_
 
 #include <stdint.h>
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_export.h"
 #include "net/http/http_byte_range.h"
@@ skipping 17 matching lines @@
   URLRequestFileJob(URLRequest* request,
                     NetworkDelegate* network_delegate,
                     const base::FilePath& file_path,
                     const scoped_refptr<base::TaskRunner>& file_task_runner);
 
   // URLRequestJob:
   void Start() override;
   void Kill() override;
   int ReadRawData(IOBuffer* buf, int buf_size) override;
   bool IsRedirectResponse(GURL* location, int* http_status_code) override;
-  std::unique_ptr<Filter> SetupFilter() const override;
   bool GetMimeType(std::string* mime_type) const override;
   void SetExtraRequestHeaders(const HttpRequestHeaders& headers) override;
 
   // An interface for subclasses who wish to monitor read operations.
   virtual void OnSeekComplete(int64_t result);
   virtual void OnReadComplete(IOBuffer* buf, int result);
 
  protected:
   ~URLRequestFileJob() override;
 
+  // URLRequestJob implementation.
+  std::unique_ptr<SourceStream> SetUpSourceStream() override;
+
   int64_t remaining_bytes() const { return remaining_bytes_; }
 
   // The OS-specific full path name of the file
   base::FilePath file_path_;
 
  private:
   // Meta information about the file. It's used as a member in the
   // URLRequestFileJob and also passed between threads because disk access is
   // necessary to obtain it.
   struct FileMetaInfo {
@@ skipping 40 matching lines @@
   Error range_parse_result_;
 
   base::WeakPtrFactory<URLRequestFileJob> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestFileJob);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_