Rename QuicSession::GetCryptoStream() to GetMutableCryptoStream(). Add a const GetCryptoStream(). M…

net/quic/core/quic_server_session_base.cc

Index: net/quic/core/quic_server_session_base.cc
diff --git a/net/quic/core/quic_server_session_base.cc b/net/quic/core/quic_server_session_base.cc
index 60e6794bc65200c088b5b1624b606d2beff52ec6..03a8fa3348e2f272efff95e63ae13673a319fd80 100644
--- a/net/quic/core/quic_server_session_base.cc
+++ b/net/quic/core/quic_server_session_base.cc
@@ -227,7 +227,12 @@ bool QuicServerSessionBase::ShouldCreateOutgoingDynamicStream() {
   return true;
 }
 
-QuicCryptoServerStreamBase* QuicServerSessionBase::GetCryptoStream() {
+QuicCryptoServerStreamBase* QuicServerSessionBase::GetMutableCryptoStream() {
+  return crypto_stream_.get();
+}
+
+const QuicCryptoServerStreamBase* QuicServerSessionBase::GetCryptoStream()
+    const {
   return crypto_stream_.get();
 }