Notify NetworkDelegate when bytes have been sent over the network.

net/base/layered_network_delegate.h

Index: net/base/layered_network_delegate.h
diff --git a/net/base/layered_network_delegate.h b/net/base/layered_network_delegate.h
index f5899e9b8733cd692bd666910992d58917af92c4..dabe681af47e3a3237ed3d8714a1f0b94f66a219 100644
--- a/net/base/layered_network_delegate.h
+++ b/net/base/layered_network_delegate.h
@@ -66,6 +66,7 @@ class NET_EXPORT LayeredNetworkDelegate : public NetworkDelegate {
   void OnResponseStarted(URLRequest* request) final;
   void OnNetworkBytesReceived(const URLRequest& request,
                               int64_t bytes_received) final;
+  void OnNetworkBytesSent(const URLRequest& request, int64_t bytes_sent) final;
   void OnCompleted(URLRequest* request, bool started) final;
   void OnURLRequestDestroyed(URLRequest* request) final;
   void OnURLRequestJobOrphaned(URLRequest* request) final;
@@ -128,6 +129,9 @@ class NET_EXPORT LayeredNetworkDelegate : public NetworkDelegate {
   virtual void OnNetworkBytesReceivedInternal(const URLRequest& request,
                                               int64_t bytes_received);
 
+  virtual void OnNetworkBytesSentInternal(const URLRequest& request,
+                                          int64_t bytes_sent);
+
   virtual void OnCompletedInternal(URLRequest* request, bool started);
 
   virtual void OnURLRequestDestroyedInternal(URLRequest* request);