fixes test cases

Author: AgraVator

binder/src/main/java/io/grpc/binder/internal/BinderClientTransport.java

@@ -54,6 +54,7 @@
 import io.grpc.internal.GrpcUtil;
 import io.grpc.internal.ManagedClientTransport;
 import io.grpc.internal.ObjectPool;
+import io.grpc.internal.SimpleDisconnectError;
 import io.grpc.internal.StatsTraceContext;
 import java.util.concurrent.Executor;
 import java.util.concurrent.ScheduledFuture;
@@ -303,7 +304,7 @@ public synchronized void shutdownNow(Status reason) {
   @Override
   @GuardedBy("this")
   void notifyShutdown(Status status) {
-    clientTransportListener.transportShutdown(status);
+    clientTransportListener.transportShutdown(status, SimpleDisconnectError.SUBCHANNEL_SHUTDOWN);
   }
 
   @Override

cronet/src/main/java/io/grpc/cronet/CronetClientTransport.java

@@ -34,6 +34,7 @@
 import io.grpc.internal.ConnectionClientTransport;
 import io.grpc.internal.GrpcAttributes;
 import io.grpc.internal.GrpcUtil;
+import io.grpc.internal.SimpleDisconnectError;
 import io.grpc.internal.StatsTraceContext;
 import io.grpc.internal.TransportTracer;
 import java.net.InetSocketAddress;
@@ -229,7 +230,7 @@ private void startGoAway(Status status) {
       startedGoAway = true;
     }
 
-    listener.transportShutdown(status);
+    listener.transportShutdown(status, SimpleDisconnectError.SUBCHANNEL_SHUTDOWN);
 
     synchronized (lock) {
       goAway = true;