Notify NetworkDelegate when bytes have been received over the network.

net/proxy/proxy_script_fetcher_impl_unittest.cc

Index: net/proxy/proxy_script_fetcher_impl_unittest.cc
diff --git a/net/proxy/proxy_script_fetcher_impl_unittest.cc b/net/proxy/proxy_script_fetcher_impl_unittest.cc
index dd49b56c68aa13c02bd41b6d9392ee109be1f2cf..651c950d6dc86b69ee5e6056e38327c248738f6d 100644
--- a/net/proxy/proxy_script_fetcher_impl_unittest.cc
+++ b/net/proxy/proxy_script_fetcher_impl_unittest.cc
@@ -146,8 +146,6 @@ class BasicNetworkDelegate : public NetworkDelegateImpl {
 
   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 {}