Eliminate gpr_ int types - and insist on C99 variants instead
diff --git a/test/cpp/interop/server_helper.h b/test/cpp/interop/server_helper.h
index dc0ae1d..57337e5 100644
--- a/test/cpp/interop/server_helper.h
+++ b/test/cpp/interop/server_helper.h
@@ -53,7 +53,7 @@
   std::shared_ptr<const AuthContext> GetAuthContext() const;
   bool IsCancelled() const;
   grpc_compression_algorithm GetCallCompressionAlgorithm() const;
-  gpr_uint32 GetEncodingsAcceptedByClient() const;
+  uint32_t GetEncodingsAcceptedByClient() const;
 
  private:
   const ::grpc::ServerContext& context_;