Round results of multiplying QuicBandwidth and QuicTime::Delta rather than truncating. No behavior…

net/quic/core/quic_bandwidth.h

Index: net/quic/core/quic_bandwidth.h
diff --git a/net/quic/core/quic_bandwidth.h b/net/quic/core/quic_bandwidth.h
index 7a8b55d8dbaa5ddd6b65442f8f69a080255fc661..2d131d277ed826fb5e84327a0f239c1868c7de55 100644
--- a/net/quic/core/quic_bandwidth.h
+++ b/net/quic/core/quic_bandwidth.h
@@ -9,6 +9,7 @@
 
 #include <stdint.h>
 
+#include <cmath>
 #include <ostream>
 
 #include "base/compiler_specific.h"
@@ -98,7 +99,8 @@ inline QuicBandwidth operator-(QuicBandwidth lhs, QuicBandwidth rhs) {
   return QuicBandwidth(lhs.bits_per_second_ - rhs.bits_per_second_);
 }
 inline QuicBandwidth operator*(QuicBandwidth lhs, float rhs) {
-  return QuicBandwidth(static_cast<int64_t>(lhs.bits_per_second_ * rhs));
+  return QuicBandwidth(
+      static_cast<int64_t>(std::llround(lhs.bits_per_second_ * rhs)));
 }
 inline QuicBandwidth operator*(float lhs, QuicBandwidth rhs) {
   return rhs * lhs;