Added and implemented HttpStream::GetTotalSentBytes for basic streams.

net/socket/socket_test_util.cc

Index: net/socket/socket_test_util.cc
diff --git a/net/socket/socket_test_util.cc b/net/socket/socket_test_util.cc
index 98bf32235ec3e6a38eb2b3c2e1457bb9e88080c1..1d5da044c677264ed09c2743f17a76b71f6e22f3 100644
--- a/net/socket/socket_test_util.cc
+++ b/net/socket/socket_test_util.cc
@@ -2038,4 +2038,18 @@ const char kSOCKS5OkResponse[] =
     { 0x05, 0x00, 0x00, 0x01, 127, 0, 0, 1, 0x00, 0x50 };
 const int kSOCKS5OkResponseLength = arraysize(kSOCKS5OkResponse);
 
+int64_t CountReadBytes(const MockRead reads[], size_t reads_size) {
+  int64_t total = 0;
+  for (const MockRead* read = reads; read != reads + reads_size; ++read)
+    total += read->data_len;
+  return total;
+}
+
+int64_t CountWriteBytes(const MockWrite writes[], size_t writes_size) {
+  int64_t total = 0;
+  for (const MockWrite* write = writes; write != writes + writes_size; ++write)
+    total += write->data_len;
+  return total;
+}
+
 }  // namespace net