Notify NetworkDelegate when bytes have been received over the network.

net/url_request/url_request_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_JOB_H_
 #define NET_URL_REQUEST_URL_REQUEST_JOB_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 335 matching lines @@
   void SetProxyServer(const HostPortPair& proxy_server);
 
   // The number of bytes read before passing to the filter. This value reflects
   // bytes read even when there is no filter.
   int64 prefilter_bytes_read() const { return prefilter_bytes_read_; }
 
   // The number of bytes read after passing through the filter. This value
   // reflects bytes read even when there is no filter.
   int64 postfilter_bytes_read() const { return postfilter_bytes_read_; }
 
+  // Notify the network delegate that more bytes have been received over the
+  // network, if bytes have been received since the previous notification.
+  // TODO(sclittle): Have this method also notify about sent bytes once
+  // URLRequestJob::GetTotalSentBytes has been implemented (crbug.com/518897).
+  void MaybeNotifyNetworkBytes();
+
   // The request that initiated this job. This value MAY BE NULL if the
   // request was released by DetachRequest().
   URLRequest* request_;
 
  private:
   // When data filtering is enabled, this function is used to read data
   // for the filter.  Returns true if raw data was read.  Returns false if
   // an error occurred (or we are waiting for IO to complete).
   bool ReadRawDataForFilter(int *bytes_read);
 
@@ skipping 61 matching lines @@
 
   // Expected content size
   int64 expected_content_size_;
 
   // Set when a redirect is deferred.
   RedirectInfo deferred_redirect_info_;
 
   // The network delegate to use with this request, if any.
   NetworkDelegate* network_delegate_;
 
+  // The value from GetTotalReceivedBytes() the last time
+  // MaybeNotifyNetworkBytes() was called. Used to calculate how bytes have been
+  // newly received since the last notification.
+  int64 last_notified_total_received_bytes_;
+
   base::WeakPtrFactory<URLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestJob);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_JOB_H_