Added and implemented HttpStream::GetTotalSentBytes for basic streams.

net/websockets/websocket_basic_handshake_stream.cc

Index: net/websockets/websocket_basic_handshake_stream.cc
diff --git a/net/websockets/websocket_basic_handshake_stream.cc b/net/websockets/websocket_basic_handshake_stream.cc
index a253e2e49f4a13d31bdd935de7b1625f426136b2..660d2aa8f9e3d7bbb1bef8676750862daf1c72fe 100644
--- a/net/websockets/websocket_basic_handshake_stream.cc
+++ b/net/websockets/websocket_basic_handshake_stream.cc
@@ -482,6 +482,10 @@ int64 WebSocketBasicHandshakeStream::GetTotalReceivedBytes() const {
   return 0;
 }
 
+int64_t WebSocketBasicHandshakeStream::GetTotalSentBytes() const {
+  return 0;
+}
+
 bool WebSocketBasicHandshakeStream::GetLoadTimingInfo(
     LoadTimingInfo* load_timing_info) const {
   return state_.connection()->GetLoadTimingInfo(IsConnectionReused(),