Added and implemented HttpStream::GetTotalSentBytes for basic streams.

net/quic/quic_http_stream.h

Index: net/quic/quic_http_stream.h
diff --git a/net/quic/quic_http_stream.h b/net/quic/quic_http_stream.h
index e0349a00967e1f961b08b26d6dd7cd29326b4dd5..a1ca51c460c99707379671ef5da0ff2a8e395126 100644
--- a/net/quic/quic_http_stream.h
+++ b/net/quic/quic_http_stream.h
@@ -5,6 +5,8 @@
 #ifndef NET_QUIC_QUIC_HTTP_STREAM_H_
 #define NET_QUIC_QUIC_HTTP_STREAM_H_
 
+#include <stdint.h>
+
 #include <list>
 
 #include "build/build_config.h"
@@ -65,6 +67,7 @@ class NET_EXPORT_PRIVATE QuicHttpStream
   void SetConnectionReused() override;
   bool IsConnectionReusable() const override;
   int64 GetTotalReceivedBytes() const override;
+  int64_t GetTotalSentBytes() const override;
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override;
   void GetSSLInfo(SSLInfo* ssl_info) override;
   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override;