Reland: URLRequestJob: change ReadRawData contract

net/test/url_request/url_request_slow_download_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.
 // This class simulates a slow download. Requests to |kUnknownSizeUrl| and
 // |kKnownSizeUrl| start downloads that pause after the first N bytes, to be
 // completed by sending a request to |kFinishDownloadUrl|.
 
 #ifndef NET_TEST_URL_REQUEST_URL_REQUEST_SLOW_DOWNLOAD_JOB_H_
 #define NET_TEST_URL_REQUEST_URL_REQUEST_SLOW_DOWNLOAD_JOB_H_
 
@@ skipping 19 matching lines @@
   static const int kSecondDownloadSize;
 
   // Timer callback, used to check to see if we should finish our download and
   // send the second chunk.
   void CheckDoneStatus();
 
   // URLRequestJob methods
   void Start() override;
   bool GetMimeType(std::string* mime_type) const override;
   void GetResponseInfo(HttpResponseInfo* info) override;
-  bool ReadRawData(IOBuffer* buf, int buf_size, int* bytes_read) override;
+  int ReadRawData(IOBuffer* buf, int buf_size) override;
 
   // Returns the current number of URLRequestSlowDownloadJobs that have
   // not yet completed.
   static size_t NumberOutstandingRequests();
 
   // Adds the testing URLs to the URLRequestFilter.
   static void AddUrlHandler();
 
  private:
   class Interceptor;
@@ skipping 38 matching lines @@
   bool should_finish_download_;
   scoped_refptr<IOBuffer> buffer_;
   int buffer_size_;
 
   base::WeakPtrFactory<URLRequestSlowDownloadJob> weak_factory_;
 };
 
 }  // namespace content
 
 #endif  // NET_TEST_URL_REQUEST_URL_REQUEST_SLOW_DOWNLOAD_JOB_H_