Add includes for GetQuicRestartFlag() and QUIC_RESTART_FLAG_COUNT.

This CL unblocks Chromium merge.

PiperOrigin-RevId: 406453911

quic/core/crypto/cert_compressor.cc

diff --git a/quic/core/crypto/cert_compressor.cc b/quic/core/crypto/cert_compressor.cc
index 1fdc3ba..e032ef6 100644
--- a/quic/core/crypto/cert_compressor.cc
+++ b/quic/core/crypto/cert_compressor.cc
@@ -12,6 +12,8 @@
 #include "absl/strings/string_view.h"
 #include "quic/core/quic_utils.h"
 #include "quic/platform/api/quic_bug_tracker.h"
+#include "quic/platform/api/quic_flag_utils.h"
+#include "quic/platform/api/quic_flags.h"
 #include "third_party/zlib/zlib.h"
 
 namespace quic {