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/platform/api/quic_reference_counted.h b/quic/platform/api/quic_reference_counted.h
index 9e5a1e0..18f6f37 100644
--- a/quic/platform/api/quic_reference_counted.h
+++ b/quic/platform/api/quic_reference_counted.h
@@ -51,7 +51,7 @@
 // QuicReferenceCountedPointer<T> r_ptr_b = std::move(r_ptr_a);
 
 template <class T>
-class /*QUIC_EXPORT_PRIVATE*/ QuicReferenceCountedPointer {
+class QUIC_NO_EXPORT QuicReferenceCountedPointer {
  public:
   QuicReferenceCountedPointer() = default;