| Index: net/dns/dns_test_util.cc | 
| diff --git a/net/dns/dns_test_util.cc b/net/dns/dns_test_util.cc | 
| index 08c1f9246d7fbf850d625b00b97d006c70daeba2..6b2bdfb594957b55622655b45925600753aea189 100644 | 
| --- a/net/dns/dns_test_util.cc | 
| +++ b/net/dns/dns_test_util.cc | 
| @@ -122,7 +122,7 @@ class MockTransaction : public DnsTransaction, | 
| writer.WriteU16(qtype_); | 
| writer.WriteU16(dns_protocol::kClassIN); | 
| writer.WriteU32(kTTL); | 
| -          writer.WriteU16(rdata_size); | 
| +          writer.WriteU16(static_cast<uint16>(rdata_size)); | 
| if (qtype_ == dns_protocol::kTypeA) { | 
| char kIPv4Loopback[] = { 0x7f, 0, 0, 1 }; | 
| writer.WriteBytes(kIPv4Loopback, sizeof(kIPv4Loopback)); | 
|  |