Notify NetworkDelegate when bytes have been received over the network.

net/url_request/url_request_job.h

Index: net/url_request/url_request_job.h
diff --git a/net/url_request/url_request_job.h b/net/url_request/url_request_job.h
index e7f40823c6926876741bae206ce12cdd65a31212..d6145c393ac3943f9dd598f9cccdf7b35d716921 100644
--- a/net/url_request/url_request_job.h
+++ b/net/url_request/url_request_job.h
@@ -353,6 +353,12 @@ class NET_EXPORT URLRequestJob
   // 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_;
@@ -434,6 +440,11 @@ class NET_EXPORT URLRequestJob
   // 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);