Remove PathCloseFrame, QuicPathId, DefaultPathId and InvalidPathId.

net/tools/quic/chlo_extractor.cc

Index: net/tools/quic/chlo_extractor.cc
diff --git a/net/tools/quic/chlo_extractor.cc b/net/tools/quic/chlo_extractor.cc
index 56a40573bb12dd0655b564a0290b5b6a2534dbe4..0235f72704b4c83054c62132d6b42ab7b4e6da76 100644
--- a/net/tools/quic/chlo_extractor.cc
+++ b/net/tools/quic/chlo_extractor.cc
@@ -45,7 +45,6 @@ class ChloFramerVisitor : public QuicFramerVisitorInterface,
   bool OnGoAwayFrame(const QuicGoAwayFrame& frame) override;
   bool OnWindowUpdateFrame(const QuicWindowUpdateFrame& frame) override;
   bool OnBlockedFrame(const QuicBlockedFrame& frame) override;
-  bool OnPathCloseFrame(const QuicPathCloseFrame& frame) override;
   bool OnPaddingFrame(const QuicPaddingFrame& frame) override;
   void OnPacketComplete() override {}
 
@@ -136,10 +135,6 @@ bool ChloFramerVisitor::OnBlockedFrame(const QuicBlockedFrame& frame) {
   return true;
 }
 
-bool ChloFramerVisitor::OnPathCloseFrame(const QuicPathCloseFrame& frame) {
-  return true;
-}
-
 bool ChloFramerVisitor::OnPaddingFrame(const QuicPaddingFrame& frame) {
   return true;
 }