netty/internal: add InternalNettyChannelBuilder.buildTransportFactory(). (#4757)

This is needed internally for building netty transports outside of a channel.

1 files changed, 5 insertions, 0 deletions

diff --git a/netty/src/main/java/io/grpc/netty/InternalNettyChannelBuilder.java b/netty/src/main/java/io/grpc/netty/InternalNettyChannelBuilder.java
index 0d5e19a6f..4711af97b 100644
--- a/netty/src/main/java/io/grpc/netty/InternalNettyChannelBuilder.java
+++ b/netty/src/main/java/io/grpc/netty/InternalNettyChannelBuilder.java
@@ -17,6 +17,7 @@
 package io.grpc.netty;
 
 import io.grpc.Internal;
+import io.grpc.internal.ClientTransportFactory;
 import io.grpc.internal.ProxyParameters;
 import java.net.SocketAddress;
 
@@ -74,5 +75,9 @@ public final class InternalNettyChannelBuilder {
     builder.setStatsRecordStartedRpcs(value);
   }
 
+  public static ClientTransportFactory buildTransportFactory(NettyChannelBuilder builder) {
+    return builder.buildTransportFactory();
+  }
+
   private InternalNettyChannelBuilder() {}
 }