Added ProcessPacketInterface interface and QuicDispatcher is derived

net/tools/quic/quic_server.cc

Index: net/tools/quic/quic_server.cc
diff --git a/net/tools/quic/quic_server.cc b/net/tools/quic/quic_server.cc
index be3d9fbd128178a8161294247535f455dd3053c6..40e389cd4ef863a18f4976fe37bc01e7d6d1c62c 100644
--- a/net/tools/quic/quic_server.cc
+++ b/net/tools/quic/quic_server.cc
@@ -215,7 +215,7 @@ void QuicServer::OnEvent(int fd, EpollEvent* event) {
 /* static */
 bool QuicServer::ReadAndDispatchSinglePacket(int fd,
                                              int port,
-                                             QuicDispatcher* dispatcher,
+                                             ProcessPacketInterface* processor,
                                              uint32* packets_dropped) {
   // Allocate some extra space so we can send an error if the client goes over
   // the limit.
@@ -235,7 +235,7 @@ bool QuicServer::ReadAndDispatchSinglePacket(int fd,
   QuicEncryptedPacket packet(buf, bytes_read, false);
 
   IPEndPoint server_address(server_ip, port);
-  dispatcher->ProcessPacket(server_address, client_address, packet);
+  processor->ProcessPacket(server_address, client_address, packet);
 
   return true;
 }