Added and implemented HttpStream::GetTotalSentBytes for basic streams.

net/http/http_network_transaction_unittest.cc

Index: net/http/http_network_transaction_unittest.cc
diff --git a/net/http/http_network_transaction_unittest.cc b/net/http/http_network_transaction_unittest.cc
index accad7da16fc38fe9be8d00e0f6394985b61992b..2f33b815b092d062b64dd07dbf989ffccf6cceb0 100644
--- a/net/http/http_network_transaction_unittest.cc
+++ b/net/http/http_network_transaction_unittest.cc
@@ -6,6 +6,8 @@
 
 #include <math.h>  // ceil
 #include <stdarg.h>
+#include <stdint.h>
+
 #include <string>
 #include <vector>
 
@@ -13368,6 +13370,11 @@ class FakeStream : public HttpStream,
     return 0;
   }
 
+  int64_t GetTotalSentBytes() const override {
+    ADD_FAILURE();
+    return 0;
+  }
+
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override {
     ADD_FAILURE();
     return false;
@@ -13591,6 +13598,11 @@ class FakeWebSocketBasicHandshakeStream : public WebSocketHandshakeStreamBase {
     return 0;
   }
 
+  int64_t GetTotalSentBytes() const override {
+    NOTREACHED();
+    return 0;
+  }
+
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override {
     NOTREACHED();
     return false;