Deal with to_string, proper usage of nullptr, and lack of map::emplace
diff --git a/test/cpp/util/test_credentials_provider.cc b/test/cpp/util/test_credentials_provider.cc
index 9d762ce..6e68f59 100644
--- a/test/cpp/util/test_credentials_provider.cc
+++ b/test/cpp/util/test_credentials_provider.cc
@@ -41,15 +41,9 @@
#include "test/core/end2end/data/ssl_test_data.h"
+namespace grpc {
namespace {
-using grpc::ChannelArguments;
-using grpc::ChannelCredentials;
-using grpc::InsecureChannelCredentials;
-using grpc::InsecureServerCredentials;
-using grpc::ServerCredentials;
-using grpc::SslCredentialsOptions;
-using grpc::SslServerCredentialsOptions;
using grpc::testing::CredentialTypeProvider;
// Provide test credentials. Thread-safe.
@@ -162,7 +156,6 @@
} // namespace
-namespace grpc {
namespace testing {
void AddSecureType(const grpc::string& type,