Remove QuicHeaderList::max_header_list_size().

The QuicHeaderList object in the affected methods originates from
QuicSpdySession::SpdyFramerVisitor.  Its |max_header_list_size_| has been set in
QuicSpdySession::SpdyFramerVisitor::set_max_header_list_size(), called from
QuicSpdySession::Initialize() with the value of |max_inbound_header_list_size_|.
This value can be directly accessed instead.

This is in preparation to remove header size limit enforcement from
QuicHeaderList altogether.

gfe-relnote: n/a, no functional change.
PiperOrigin-RevId: 286383519
Change-Id: If08f23e05f08f90a7358168f7741a8e805a1614f

quic/core/http/quic_header_list.h

diff --git a/quic/core/http/quic_header_list.h b/quic/core/http/quic_header_list.h
index c019ceb..fe62f51 100644
--- a/quic/core/http/quic_header_list.h
+++ b/quic/core/http/quic_header_list.h
@@ -52,10 +52,13 @@
   }
   size_t compressed_header_bytes() const { return compressed_header_bytes_; }
 
+  // Deprecated.  TODO(b/145909215): remove.
   void set_max_header_list_size(size_t max_header_list_size) {
     max_header_list_size_ = max_header_list_size;
   }
 
+  // Deprecated.  TODO(b/145909215): remove when deprecating
+  // FLAGS_gfe2_reloadable_flag_quic_use_session_max_inbound_header_list_size.
   size_t max_header_list_size() const { return max_header_list_size_; }
 
   std::string DebugString() const;

quic/core/http/quic_spdy_stream.h

diff --git a/quic/core/http/quic_spdy_stream.h b/quic/core/http/quic_spdy_stream.h
index 9650744..419b88f 100644
--- a/quic/core/http/quic_spdy_stream.h
+++ b/quic/core/http/quic_spdy_stream.h
@@ -219,6 +219,8 @@
                         bool header_list_size_limit_exceeded) override;
   void OnHeaderDecodingError(quiche::QuicheStringPiece error_message) override;
 
+  QuicSpdySession* spdy_session() const { return spdy_session_; }
+
  protected:
   // Called when the received headers are too large. By default this will
   // reset the stream.
@@ -235,7 +237,6 @@
       bool fin,
       QuicReferenceCountedPointer<QuicAckListenerInterface> ack_listener);
 
-  QuicSpdySession* spdy_session() const { return spdy_session_; }
   Visitor* visitor() { return visitor_; }
 
   void set_headers_decompressed(bool val) { headers_decompressed_ = val; }