gfe-relnote: (n/a) For test BbrSenderTest.SimpleTransfer2RTTAggregationBytes, relax the expectation on sender-measured min_rtt. Test only.

This fixes the flakiness started from cl/290179167.

PiperOrigin-RevId: 290331710
Change-Id: If2d06c515fb0f7e80ef37632dbee8893fe4972f5

quic/core/congestion_control/bbr_sender_test.cc

diff --git a/quic/core/congestion_control/bbr_sender_test.cc b/quic/core/congestion_control/bbr_sender_test.cc
index 5fe727e..fac4a34 100644
--- a/quic/core/congestion_control/bbr_sender_test.cc
+++ b/quic/core/congestion_control/bbr_sender_test.cc
@@ -444,12 +444,10 @@
   // overestimating bandwidth with aggregation. b/36022633
   EXPECT_GE(kTestLinkBandwidth * 1.5f,
             sender_->ExportDebugState().max_bandwidth);
-  // TODO(ianswett): Expect 0 packets are lost once BBR no longer measures
-  // bandwidth higher than the link rate.
   // The margin here is high, because the aggregation greatly increases
   // smoothed rtt.
   EXPECT_GE(kTestRtt * 4, rtt_stats_->smoothed_rtt());
-  EXPECT_APPROX_EQ(kTestRtt, rtt_stats_->min_rtt(), 0.2f);
+  EXPECT_APPROX_EQ(kTestRtt, rtt_stats_->min_rtt(), 0.5f);
 }
 
 // Test a simple long data transfer with 2 rtts of aggregation.