WIP. Added ChannelInterface

1 files changed, 2 insertions, 1 deletions

diff --git a/include/grpc++/completion_queue.h b/include/grpc++/completion_queue.h
index 5c2bc202c3..adae9265a6 100644
--- a/include/grpc++/completion_queue.h
+++ b/include/grpc++/completion_queue.h
@@ -68,6 +68,7 @@ class BidiStreamingHandler;
 class UnknownMethodHandler;
 
 class Channel;
+class ChannelInterface;
 class ClientContext;
 class CompletionQueueTag;
 class CompletionQueue;
@@ -171,7 +172,7 @@ class CompletionQueue : public GrpcLibrary {
   friend class ::grpc::Server;
   friend class ::grpc::ServerContext;
   template <class InputMessage, class OutputMessage>
-  friend Status BlockingUnaryCall(Channel* channel, const RpcMethod& method,
+  friend Status BlockingUnaryCall(ChannelInterface* channel, const RpcMethod& method,
                                   ClientContext* context,
                                   const InputMessage& request,
                                   OutputMessage* result);