Remove the unused QUIC port selection logic.

net/quic/chromium/quic_stream_factory.h

Index: net/quic/chromium/quic_stream_factory.h
diff --git a/net/quic/chromium/quic_stream_factory.h b/net/quic/chromium/quic_stream_factory.h
index afe0836afaba889415e66b55fdf4428b785eb156..14d1b3893fae3d5a68cd1deb4cbe0065c391460f 100644
--- a/net/quic/chromium/quic_stream_factory.h
+++ b/net/quic/chromium/quic_stream_factory.h
@@ -199,7 +199,6 @@ class NET_EXPORT_PRIVATE QuicStreamFactory
       size_t max_packet_length,
       const std::string& user_agent_id,
       const QuicVersionVector& supported_versions,
-      bool enable_port_selection,
       bool always_require_handshake_confirmation,
       bool disable_connection_pooling,
       float load_server_info_timeout_srtt_multiplier,
@@ -369,8 +368,6 @@ class NET_EXPORT_PRIVATE QuicStreamFactory
 
   QuicChromiumAlarmFactory* alarm_factory() { return alarm_factory_.get(); }
 
-  bool enable_port_selection() const { return enable_port_selection_; }
-
   bool has_quic_server_info_factory() {
     return quic_server_info_factory_.get() != nullptr;
   }
@@ -549,11 +546,6 @@ class NET_EXPORT_PRIVATE QuicStreamFactory
 
   QuicVersionVector supported_versions_;
 
-  // Determine if we should consistently select a client UDP port. If false,
-  // then we will just let the OS select a random client port for each new
-  // connection.
-  bool enable_port_selection_;
-
   // Set if we always require handshake confirmation. If true, this will
   // introduce at least one RTT for the handshake before the client sends data.
   bool always_require_handshake_confirmation_;
@@ -629,14 +621,6 @@ class NET_EXPORT_PRIVATE QuicStreamFactory
   // If set, configure QUIC sockets to not fragment packets.
   bool quic_do_not_fragment_;
 
-  // Each profile will (probably) have a unique port_seed_ value.  This value
-  // is used to help seed a pseudo-random number generator (PortSuggester) so
-  // that we consistently (within this profile) suggest the same ephemeral
-  // port when we re-connect to any given server/port.  The differences between
-  // profiles (probablistically) prevent two profiles from colliding in their
-  // ephemeral port requests.
-  uint64_t port_seed_;
-
   // Local address of socket that was created in CreateSession.
   IPEndPoint local_address_;
   bool check_persisted_supports_quic_;