message: Use InsecureServerCredentials for OSS and internal testing.
diff: @@ -35,8 +35,8 @@ void ProfilerServer::StartProfilerServer(int32 port) {
  ::grpc::ServerBuilder builder;
  int selected_port = 0;
  - builder.AddListeningPort(
  - server_address, profiler::GetDefaultServerCredentials(), &selected_port);
  + builder.AddListeningPort(server_address, ::grpc::InsecureServerCredentials(),
  + &selected_port);
  builder.RegisterService(service_.get());
  server_ = builder.BuildAndStart();
  if (!selected_port) {
  