Remove single line virtual methods that are not overridden anywhere.

net/tools/quic/quic_client.cc

Index: net/tools/quic/quic_client.cc
diff --git a/net/tools/quic/quic_client.cc b/net/tools/quic/quic_client.cc
index ec5e4e0bcb918f5e04f8c44f734267282a4a95ee..56514ae89ee223e1364f94ee7ca285b70ca09844 100644
--- a/net/tools/quic/quic_client.cc
+++ b/net/tools/quic/quic_client.cc
@@ -77,7 +77,7 @@ QuicClient::QuicClient(IPEndPoint server_address,
       use_recvmmsg_(false),
       store_response_(false),
       latest_response_code_(-1),
-      packet_reader_(CreateQuicPacketReader()) {}
+      packet_reader_(new QuicPacketReader()) {}
 
 QuicClient::~QuicClient() {
   if (connected()) {
@@ -479,10 +479,6 @@ QuicPacketWriter* QuicClient::CreateQuicPacketWriter() {
   return new QuicDefaultPacketWriter(GetLatestFD());
 }
 
-QuicPacketReader* QuicClient::CreateQuicPacketReader() {
-  return new QuicPacketReader();
-}
-
 const IPEndPoint QuicClient::GetLatestClientAddress() const {
   if (fd_address_map_.empty()) {
     return IPEndPoint();