message: Fix wrong namespace in recently-added shim header.
diff: @@ -17,4 +17,12 @@ limitations under the License.
  #include "tensorflow/lite/kernels/register.h"
  +namespace tflite_shims {
  +namespace ops {
  +namespace builtin {
  +using BuiltinOpResolver = ::tflite::ops::builtin::BuiltinOpResolver;
  +} // namespace builtin
  +} // namespace ops
  +} // namespace tflite_shims
  +
  #endif // TENSORFLOW_LITE_CORE_SHIMS_CC_KERNELS_REGISTER_H_
  