Make QUIC version negotiation stateless. The QUIC dispatcher now detects version mismatch before cr…

net/tools/quic/quic_time_wait_list_manager.h

Index: net/tools/quic/quic_time_wait_list_manager.h
diff --git a/net/tools/quic/quic_time_wait_list_manager.h b/net/tools/quic/quic_time_wait_list_manager.h
index 51df345d510adcd53bc36a2bbd213b29d1ec845d..52e1d6210ca54b9e0e4ae8ef79a263d074a49bd2 100644
--- a/net/tools/quic/quic_time_wait_list_manager.h
+++ b/net/tools/quic/quic_time_wait_list_manager.h
@@ -98,6 +98,14 @@ class QuicTimeWaitListManager : public QuicBlockedWriterInterface {
   // The number of connections on the time-wait list.
   size_t num_connections() const { return connection_id_map_.size(); }
 
+  // Sends a version negotiation packet for |connection_id| announcing support
+  // for |supported_versions| to |client_address| from |server_address|.
+  virtual void SendVersionNegotiationPacket(
+      QuicConnectionId connection_id,
+      const QuicVersionVector& supported_versions,
+      const IPEndPoint& server_address,
+      const IPEndPoint& client_address);
+
  protected:
   virtual QuicEncryptedPacket* BuildPublicReset(
       const QuicPublicResetPacket& packet);