Make ByteStream independent from DownloadInterruptReason

content/browser/download/download_resource_handler.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_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer/timer.h"
 #include "content/browser/loader/resource_handler.h"
+#include "content/public/browser/download_interrupt_reasons.h"
 #include "content/public/browser/download_manager.h"
 #include "content/public/browser/download_save_info.h"
 #include "content/public/browser/download_url_parameters.h"
 #include "content/public/browser/global_request_id.h"
 #include "net/base/net_errors.h"
 
 
 namespace net {
 class URLRequest;
 }  // namespace net
 
 namespace content {
+template <typename StatusType>
 class ByteStreamWriter;
-class ByteStreamReader;
 class DownloadRequestHandle;
 struct DownloadCreateInfo;
 
 // Forwards data to the download thread.
 class CONTENT_EXPORT DownloadResourceHandler
     : public ResourceHandler,
       public base::SupportsWeakPtr<DownloadResourceHandler> {
  public:
   // Size of the buffer used between the DownloadResourceHandler and the
   // downstream receiver of its output.
@@ skipping 71 matching lines @@
   std::string content_disposition_;
   int64 content_length_;
   net::URLRequest* request_;
   // This is read only on the IO thread, but may only
   // be called on the UI thread.
   DownloadUrlParameters::OnStartedCallback started_cb_;
   scoped_ptr<DownloadSaveInfo> save_info_;
 
   // Data flow
   scoped_refptr<net::IOBuffer> read_buffer_;       // From URLRequest.
-  scoped_ptr<ByteStreamWriter> stream_writer_; // To rest of system.
+  scoped_ptr<ByteStreamWriter<DownloadInterruptReason> >
+      stream_writer_; // To rest of system.
 
   // The following are used to collect stats.
   base::TimeTicks download_start_time_;
   base::TimeTicks last_read_time_;
   base::TimeTicks last_stream_pause_time_;
   base::TimeDelta total_pause_time_;
   size_t last_buffer_size_;
   int64 bytes_read_;
   std::string accept_ranges_;
 
   int pause_count_;
   bool was_deferred_;
 
   // For DCHECKing
   bool on_response_started_called_;
 
   static const int kReadBufSize = 32768;  // bytes
   static const int kThrottleTimeMs = 200;  // milliseconds
 
   DISALLOW_COPY_AND_ASSIGN(DownloadResourceHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_