Remove usages of QuicMakeUnique, Http2MakeUnique, SpdyMakeUnique.

This is made possible by all embedders finally supporting C++14's
std::make_unique, which is already used in more than 100 files in quic/.

gfe-relnote: n/a, no functional change.
PiperOrigin-RevId: 273935577
Change-Id: Icd6dd234422f286d897ea13ae609a67310f96380
diff --git a/quic/tools/quic_client.cc b/quic/tools/quic_client.cc
index 01964f6..cccb7ba 100644
--- a/quic/tools/quic_client.cc
+++ b/quic/tools/quic_client.cc
@@ -12,6 +12,8 @@
 #include <sys/socket.h>
 #include <sys/types.h>
 
+#include <utility>
+
 #include "net/third_party/quiche/src/quic/core/crypto/quic_random.h"
 #include "net/third_party/quiche/src/quic/core/http/spdy_utils.h"
 #include "net/third_party/quiche/src/quic/core/quic_connection.h"