Fix variable type mismatch.

uint64_t and size_t are not the same type on some Chromium platforms.

gfe-relnote: no behavior change. Not protected.
PiperOrigin-RevId: 281602900
Change-Id: Ibe1e4aa62860eb981df05a795d883821d93d13ef

quic/core/http/quic_header_list.cc

diff --git a/quic/core/http/quic_header_list.cc b/quic/core/http/quic_header_list.cc
index 2aa4464..cba3e58 100644
--- a/quic/core/http/quic_header_list.cc
+++ b/quic/core/http/quic_header_list.cc
@@ -14,7 +14,7 @@
 namespace quic {
 
 QuicHeaderList::QuicHeaderList()
-    : max_header_list_size_(std::numeric_limits<uint64_t>::max()),
+    : max_header_list_size_(std::numeric_limits<size_t>::max()),
       current_header_list_size_(0),
       uncompressed_header_bytes_(0),
       compressed_header_bytes_(0) {}