Remove PathCloseFrame, QuicPathId, DefaultPathId and InvalidPathId.

net/quic/core/quic_connection.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // The entity that handles framing writes for a Quic client or server.
 // Each QuicSession will have a connection associated with it.
 //
 // On the server side, the Dispatcher handles the raw reads, and hands off
 // packets via ProcessUdpPacket for framing and processing.
 //
@@ skipping 211 matching lines @@
 
   // Called when a ConnectionCloseFrame has been parsed.
   virtual void OnConnectionCloseFrame(const QuicConnectionCloseFrame& frame) {}
 
   // Called when a WindowUpdate has been parsed.
   virtual void OnWindowUpdateFrame(const QuicWindowUpdateFrame& frame) {}
 
   // Called when a BlockedFrame has been parsed.
   virtual void OnBlockedFrame(const QuicBlockedFrame& frame) {}
 
-  // Called when a PathCloseFrame has been parsed.
-  virtual void OnPathCloseFrame(const QuicPathCloseFrame& frame) {}
-
   // Called when a public reset packet has been received.
   virtual void OnPublicResetPacket(const QuicPublicResetPacket& packet) {}
 
   // Called when a version negotiation packet has been received.
   virtual void OnVersionNegotiationPacket(
       const QuicVersionNegotiationPacket& packet) {}
 
   // Called when the connection is closed.
   virtual void OnConnectionClosed(QuicErrorCode error,
                                   const std::string& error_details,
@@ skipping 193 matching lines @@
   bool OnStreamFrame(const QuicStreamFrame& frame) override;
   bool OnAckFrame(const QuicAckFrame& frame) override;
   bool OnStopWaitingFrame(const QuicStopWaitingFrame& frame) override;
   bool OnPaddingFrame(const QuicPaddingFrame& frame) override;
   bool OnPingFrame(const QuicPingFrame& frame) override;
   bool OnRstStreamFrame(const QuicRstStreamFrame& frame) override;
   bool OnConnectionCloseFrame(const QuicConnectionCloseFrame& frame) override;
   bool OnGoAwayFrame(const QuicGoAwayFrame& frame) override;
   bool OnWindowUpdateFrame(const QuicWindowUpdateFrame& frame) override;
   bool OnBlockedFrame(const QuicBlockedFrame& frame) override;
-  bool OnPathCloseFrame(const QuicPathCloseFrame& frame) override;
   void OnPacketComplete() override;
 
   // QuicConnectionCloseDelegateInterface
   void OnUnrecoverableError(QuicErrorCode error,
                             const std::string& error_details,
                             ConnectionCloseSource source) override;
 
   // QuicPacketGenerator::DelegateInterface
   bool ShouldGeneratePacket(HasRetransmittableData retransmittable,
                             IsHandshake handshake) override;
@@ skipping 626 matching lines @@
 
   // Indicates not to send or process stop waiting frames.
   bool no_stop_waiting_frames_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnection);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_QUIC_CONNECTION_H_