gfe-relnote: Add some bbr startup stats into QuicConnectionStats. Stats only. Not protected.

PiperOrigin-RevId: 241339065
Change-Id: Idef0c196eb0ab6bbe202a33d79e65a88a43678fd
diff --git a/quic/core/quic_time.h b/quic/core/quic_time.h
index c8a1c84..cd33649 100644
--- a/quic/core/quic_time.h
+++ b/quic/core/quic_time.h
@@ -234,6 +234,12 @@
   return !(lhs < rhs);
 }
 
+// Override stream output operator for gtest or CHECK macros.
+inline std::ostream& operator<<(std::ostream& output, const QuicTime t) {
+  output << t.ToDebuggingValue();
+  return output;
+}
+
 // Non-member arithmetic operators for QuicTime::Delta.
 inline QuicTime::Delta operator+(QuicTime::Delta lhs, QuicTime::Delta rhs) {
   return QuicTime::Delta(lhs.time_offset_ + rhs.time_offset_);