Notify NetworkDelegate when bytes have been received over the network.

net/proxy/network_delegate_error_observer_unittest.cc

Index: net/proxy/network_delegate_error_observer_unittest.cc
diff --git a/net/proxy/network_delegate_error_observer_unittest.cc b/net/proxy/network_delegate_error_observer_unittest.cc
index 5fd4a95620754d6190318e0c48dcafb25851df16..3d8db2376d1526c9ffe81f92734fc4d392b8e7e9 100644
--- a/net/proxy/network_delegate_error_observer_unittest.cc
+++ b/net/proxy/network_delegate_error_observer_unittest.cc
@@ -50,7 +50,6 @@ class TestNetworkDelegate : public NetworkDelegateImpl {
   void OnBeforeRedirect(URLRequest* request,
                         const GURL& new_location) override {}
   void OnResponseStarted(URLRequest* request) override {}
-  void OnRawBytesRead(const URLRequest& request, int bytes_read) override {}
   void OnCompleted(URLRequest* request, bool started) override {}
   void OnURLRequestDestroyed(URLRequest* request) override {}