Notify NetworkDelegate when bytes have been received over the network.

net/url_request/url_request_context_builder.cc

Index: net/url_request/url_request_context_builder.cc
diff --git a/net/url_request/url_request_context_builder.cc b/net/url_request/url_request_context_builder.cc
index 6055cc44669168a6aab59a61658fedb4a4af6aa8..e029a1e7409ab5b5d2cccfa0605618d0e62e71b4 100644
--- a/net/url_request/url_request_context_builder.cc
+++ b/net/url_request/url_request_context_builder.cc
@@ -89,8 +89,6 @@ 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 {}