Move test only MakeIOVector method to test_tools/quic_test_utils.h. No behavior change.

net/quic/core/quic_utils.h

Index: net/quic/core/quic_utils.h
diff --git a/net/quic/core/quic_utils.h b/net/quic/core/quic_utils.h
index ccab7a196a17bc6503d22496a1a7911b014f05f5..a68a0608fb0dc3e8e47a27716a8c1de89ec5ccfb 100644
--- a/net/quic/core/quic_utils.h
+++ b/net/quic/core/quic_utils.h
@@ -16,7 +16,6 @@
 #include "base/strings/string_piece.h"
 #include "net/base/int128.h"
 #include "net/base/net_export.h"
-#include "net/quic/core/quic_iovector.h"
 #include "net/quic/core/quic_protocol.h"
 
 #ifdef _MSC_VER
@@ -121,15 +120,6 @@ class NET_EXPORT_PRIVATE QuicUtils {
   DISALLOW_COPY_AND_ASSIGN(QuicUtils);
 };
 
-// Utility function that returns an QuicIOVector object wrapped around |str|.
-// |str|'s data is stored in |iov|.
-inline QuicIOVector MakeIOVector(base::StringPiece str, struct iovec* iov) {
-  iov->iov_base = const_cast<char*>(str.data());
-  iov->iov_len = static_cast<size_t>(str.size());
-  QuicIOVector quic_iov(iov, 1, str.size());
-  return quic_iov;
-}
-
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_QUIC_UTILS_H_