Added and implemented HttpStream::GetTotalSentBytes for basic streams.

net/http/proxy_connect_redirect_http_stream.cc

Index: net/http/proxy_connect_redirect_http_stream.cc
diff --git a/net/http/proxy_connect_redirect_http_stream.cc b/net/http/proxy_connect_redirect_http_stream.cc
index 4e12a327229005e284cb18ee21678b2457198886..9d5f3150e36f991b7f1eda21e970354b3668c125 100644
--- a/net/http/proxy_connect_redirect_http_stream.cc
+++ b/net/http/proxy_connect_redirect_http_stream.cc
@@ -80,6 +80,10 @@ int64 ProxyConnectRedirectHttpStream::GetTotalReceivedBytes() const {
   return 0;
 }
 
+int64_t ProxyConnectRedirectHttpStream::GetTotalSentBytes() const {
+  return 0;
+}
+
 bool ProxyConnectRedirectHttpStream::GetLoadTimingInfo(
     LoadTimingInfo* load_timing_info) const {
   if (!has_load_timing_info_)