chore: import upstream snapshot with attribution

tensorflow/lite/python/testdata/test_registerer.h

@@ -0,0 +1,32 @@
+/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_PYTHON_TESTDATA_TEST_REGISTERER_H_
+#define TENSORFLOW_LITE_PYTHON_TESTDATA_TEST_REGISTERER_H_
+
+#include "tensorflow/lite/mutable_op_resolver.h"
+
+namespace tflite {
+
+// Dummy registerer function with the correct signature. Ignores the resolver
+// but increments the num_test_registerer_calls counter by one. The TF_ prefix
+// is needed to get past the version script in the OSS build.
+extern "C" void TF_TestRegisterer(tflite::MutableOpResolver *resolver);
+
+// Returns the num_test_registerer_calls counter and re-sets it.
+int get_num_test_registerer_calls();
+
+}  // namespace tflite
+
+#endif  // TENSORFLOW_LITE_PYTHON_TESTDATA_TEST_REGISTERER_H_