Make QuicDispatcher's helper and alarm factory arguments unique_ptrs to make ownership clear.

net/quic/test_tools/quic_connection_peer.cc

Index: net/quic/test_tools/quic_connection_peer.cc
diff --git a/net/quic/test_tools/quic_connection_peer.cc b/net/quic/test_tools/quic_connection_peer.cc
index 8b2407c34d52dab2f688bbc13a9c5a6b15c375b5..d57c0ce9c26ba391291868cb5970d0b5bb8b3873 100644
--- a/net/quic/test_tools/quic_connection_peer.cc
+++ b/net/quic/test_tools/quic_connection_peer.cc
@@ -146,6 +146,12 @@ QuicConnectionHelperInterface* QuicConnectionPeer::GetHelper(
 }
 
 // static
+QuicAlarmFactory* QuicConnectionPeer::GetAlarmFactory(
+    QuicConnection* connection) {
+  return connection->alarm_factory_;
+}
+
+// static
 QuicFramer* QuicConnectionPeer::GetFramer(QuicConnection* connection) {
   return &connection->framer_;
 }