Removed unnecessary static_cast and replaced it with "lu".

net/quic/quic_unacked_packet_map_test.cc

Index: net/quic/quic_unacked_packet_map_test.cc
diff --git a/net/quic/quic_unacked_packet_map_test.cc b/net/quic/quic_unacked_packet_map_test.cc
index c9d4491cf8a2e680b81453e711d0f8a3d35954c3..1b084c13d435b9dd26f4b0c0b4f3299f76e8c659 100644
--- a/net/quic/quic_unacked_packet_map_test.cc
+++ b/net/quic/quic_unacked_packet_map_test.cc
@@ -118,11 +118,11 @@ TEST_F(QuicUnackedPacketMapTest, RttOnly) {
 TEST_F(QuicUnackedPacketMapTest, DiscardOldRttOnly) {
   // Acks are only tracked for RTT measurement purposes, and are discarded
   // when more than 200 accumulate.
-  for (int i = 1; i < 400; ++i) {
+  for (size_t i = 1; i < 400; ++i) {
     unacked_packets_.AddPacket(CreateNonRetransmittablePacket(i));
     unacked_packets_.SetSent(i, now_, kDefaultAckLength, false);
     unacked_packets_.RemoveObsoletePackets();
-    EXPECT_EQ(static_cast<size_t>(min(i, 200)),
+    EXPECT_EQ(min(i, 200lu),
               unacked_packets_.GetNumUnackedPacketsDebugOnly());
   }
 }