Notify NetworkDelegate when bytes have been received over the network.

net/base/layered_network_delegate.cc

Index: net/base/layered_network_delegate.cc
diff --git a/net/base/layered_network_delegate.cc b/net/base/layered_network_delegate.cc
index 47441f567b6bcb845f164cb406d6733f5887d4de..c476de4884b8afa1542498de9bc7a4e38ac8e380 100644
--- a/net/base/layered_network_delegate.cc
+++ b/net/base/layered_network_delegate.cc
@@ -148,6 +148,16 @@ void LayeredNetworkDelegate::OnRawBytesReadInternal(const URLRequest& request,
                                                     int bytes_read) {
 }
 
+void LayeredNetworkDelegate::OnNetworkBytesReceived(const URLRequest& request,
+                                                    int64_t bytes_received) {
+  OnNetworkBytesReceivedInternal(request, bytes_received);
+  nested_network_delegate_->NotifyNetworkBytesReceived(request, bytes_received);
+}
+
+void LayeredNetworkDelegate::OnNetworkBytesReceivedInternal(
+    const URLRequest& request,
+    int64_t bytes_received) {}
+
 void LayeredNetworkDelegate::OnCompleted(URLRequest* request, bool started) {
   OnCompletedInternal(request, started);
   nested_network_delegate_->NotifyCompleted(request, started);