Comment out names of unused arguments

include/grpcpp/security/credentials.h

@@ -98,10 +98,10 @@ class ChannelCredentials : private GrpcLibraryCodegen {
   // This function should have been a pure virtual function, but it is
   // implemented as a virtual function so that it does not break API.
   virtual std::shared_ptr<Channel> CreateChannelWithInterceptors(
-      const grpc::string& target, const ChannelArguments& args,
+      const grpc::string& /* target */, const ChannelArguments& /* args */,
       std::vector<
           std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>
-          interceptor_creators) {
+      /* interceptor_creators */) {
     return nullptr;
   }
 };