Remove stl_util's deletion functions from remaining quic code.

net/quic/test_tools/quic_test_utils.cc

Index: net/quic/test_tools/quic_test_utils.cc
diff --git a/net/quic/test_tools/quic_test_utils.cc b/net/quic/test_tools/quic_test_utils.cc
index 2a6ef34f268548e809c69f3a1f6d76a7dafe0bbf..d2506c6e6b748fb6bca9df63579fdf9866cc343f 100644
--- a/net/quic/test_tools/quic_test_utils.cc
+++ b/net/quic/test_tools/quic_test_utils.cc
@@ -6,8 +6,8 @@
 
 #include <memory>
 
+#include "base/memory/ptr_util.h"
 #include "base/sha1.h"
-#include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/core/crypto/crypto_framer.h"
 #include "net/quic/core/crypto/crypto_handshake.h"
@@ -359,12 +359,10 @@ PacketSavingConnection::PacketSavingConnection(
                          perspective,
                          supported_versions) {}
 
-PacketSavingConnection::~PacketSavingConnection() {
-  base::STLDeleteElements(&encrypted_packets_);
-}
+PacketSavingConnection::~PacketSavingConnection() {}
 
 void PacketSavingConnection::SendOrQueuePacket(SerializedPacket* packet) {
-  encrypted_packets_.push_back(new QuicEncryptedPacket(
+  encrypted_packets_.push_back(base::MakeUnique<QuicEncryptedPacket>(
       QuicUtils::CopyBuffer(*packet), packet->encrypted_length, true));
   // Transfer ownership of the packet to the SentPacketManager and the
   // ack notifier to the AckNotifierManager.