Introduce QUIC_NO_EXPORT

This CL replaces the /*QUIC_EXPORT_PRIVATE*/ annotation with QUIC_NO_EXPORT and changes the presubmit to allow that.

QUIC_NO_EXPORT was added to Chromium via:
https://chromium-review.googlesource.com/c/chromium/src/+/1885392

gfe-relnote: n/a, comment-only change
PiperOrigin-RevId: 277332771
Change-Id: I2badefc67bae486e5908925daeecb6886b174532
diff --git a/quic/core/chlo_extractor.h b/quic/core/chlo_extractor.h
index 7d6d17d..89dffe1 100644
--- a/quic/core/chlo_extractor.h
+++ b/quic/core/chlo_extractor.h
@@ -12,9 +12,9 @@
 
 // A utility for extracting QUIC Client Hello messages from packets,
 // without needs to spin up a full QuicSession.
-class /*QUIC_EXPORT_PRIVATE*/ ChloExtractor {
+class QUIC_NO_EXPORT ChloExtractor {
  public:
-  class /*QUIC_EXPORT_PRIVATE*/ Delegate {
+  class QUIC_NO_EXPORT Delegate {
    public:
     virtual ~Delegate() {}