Reland: URLRequestJob: change ReadRawData contract

content/browser/service_worker/service_worker_read_from_cache_job.h

 // Copyright 2014 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_SERVICE_WORKER_SERVICE_WORKER_READ_FROM_CACHE_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_READ_FROM_CACHE_JOB_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 33 matching lines @@
 
   // net::URLRequestJob overrides
   void Start() override;
   void Kill() override;
   net::LoadState GetLoadState() const override;
   bool GetCharset(std::string* charset) override;
   bool GetMimeType(std::string* mime_type) const override;
   void GetResponseInfo(net::HttpResponseInfo* info) override;
   int GetResponseCode() const override;
   void SetExtraRequestHeaders(const net::HttpRequestHeaders& headers) override;
-  bool ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read) override;
+  int ReadRawData(net::IOBuffer* buf, int buf_size) override;
 
   // Reader completion callbacks.
   void OnReadInfoComplete(int result);
   void OnReadComplete(int result);
 
   // Helpers
+  void StartAsync();
   const net::HttpResponseInfo* http_info() const;
   bool is_range_request() const { return range_requested_.IsValid(); }
   void SetupRangeResponse(int response_data_size);
   void Done(const net::URLRequestStatus& status);
 
   ResourceType resource_type_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
   scoped_refptr<ServiceWorkerVersion> version_;
   int64 resource_id_;
   scoped_ptr<ServiceWorkerResponseReader> reader_;
   scoped_refptr<HttpResponseInfoIOBuffer> http_info_io_buffer_;
   scoped_ptr<net::HttpResponseInfo> http_info_;
   net::HttpByteRange range_requested_;
   scoped_ptr<net::HttpResponseInfo> range_response_info_;
   bool has_been_killed_;
   base::WeakPtrFactory<ServiceWorkerReadFromCacheJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerReadFromCacheJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_READ_FROM_CACHE_JOB_H_