Delete unused constants from quic_protocol.h. No behavior change.

net/quic/core/quic_protocol.h

Index: net/quic/core/quic_protocol.h
diff --git a/net/quic/core/quic_protocol.h b/net/quic/core/quic_protocol.h
index 02903cb78c8010724ada1366f7ca1c9535176296..3f8dbff1aed56fd9c8ed64753f40054332663efd 100644
--- a/net/quic/core/quic_protocol.h
+++ b/net/quic/core/quic_protocol.h
@@ -75,22 +75,11 @@ const uint32_t kMinimumFlowControlSendWindow = 16 * 1024;  // 16 KB
 const QuicByteCount kStreamReceiveWindowLimit = 16 * 1024 * 1024;   // 16 MB
 const QuicByteCount kSessionReceiveWindowLimit = 24 * 1024 * 1024;  // 24 MB
 
-// Minimum size of the CWND, in packets, when doing bandwidth resumption.
-const QuicPacketCount kMinCongestionWindowForBandwidthResumption = 10;
-
 // Maximum number of tracked packets.
 const QuicPacketCount kMaxTrackedPackets = 10000;
 
 // Default size of the socket receive buffer in bytes.
 const QuicByteCount kDefaultSocketReceiveBuffer = 1024 * 1024;
-// Minimum size of the socket receive buffer in bytes.
-// Smaller values are ignored.
-const QuicByteCount kMinSocketReceiveBuffer = 16 * 1024;
-
-// Fraction of the receive buffer that can be used, based on conservative
-// estimates and testing on Linux.
-// An alternative to kUsableRecieveBufferFraction.
-static const float kConservativeReceiveBufferFraction = 0.6f;
 
 // Don't allow a client to suggest an RTT shorter than 10ms.
 const uint32_t kMinInitialRoundTripTimeUs = 10 * kNumMicrosPerMilli;