Automated sync from github.com/tensorflow/tensorflow (#2634)

BUG=automated sync from upstream
NO_CHECK_TFLITE_FILES=automated sync from upstream

tensorflow/lite/kernels/internal/reference/portable_tensor_utils.cc

diff --git a/tensorflow/lite/kernels/internal/reference/portable_tensor_utils.cc b/tensorflow/lite/kernels/internal/reference/portable_tensor_utils.cc
index 7d40df4..d529463 100644
--- a/tensorflow/lite/kernels/internal/reference/portable_tensor_utils.cc
+++ b/tensorflow/lite/kernels/internal/reference/portable_tensor_utils.cc
@@ -37,6 +37,7 @@
 const int32_t kInt16Min = std::numeric_limits<int16_t>::min();
 }  // namespace
 
+// LINT.IfChange(portable_symmetric_quantize_floats)
 void PortableSymmetricQuantizeFloats(const float* values, const int size,
                                      int8_t* quantized_values, float* min_value,
                                      float* max_value, float* scaling_factor) {
@@ -68,6 +69,7 @@
         std::min(kScale, std::max(-kScale, quantized_value)));
   }
 }
+// LINT.ThenChange(//tensorflow/compiler/mlir/lite/quantization/lite/toco_legacy/portable_tensor_utils.cc:portable_symmetric_quantize_floats)
 
 void PortableAsymmetricQuantizeFloats(const float* values, const int size,
                                       int8_t* quantized_values,

tensorflow/lite/kernels/internal/reference/portable_tensor_utils_impl.h

diff --git a/tensorflow/lite/kernels/internal/reference/portable_tensor_utils_impl.h b/tensorflow/lite/kernels/internal/reference/portable_tensor_utils_impl.h
index 11765ec..5e228bb 100644
--- a/tensorflow/lite/kernels/internal/reference/portable_tensor_utils_impl.h
+++ b/tensorflow/lite/kernels/internal/reference/portable_tensor_utils_impl.h
@@ -40,6 +40,7 @@
   return true;
 }
 
+// LINT.IfChange(portable_symmetric_quantize_floats)
 void PortableSymmetricQuantizeFloats(const float* values, const int size,
                                      int8_t* quantized_values, float* min_value,
                                      float* max_value, float* scaling_factor);
@@ -47,6 +48,7 @@
 void PortableSymmetricQuantizeFloats(const float* values, const int size,
                                      int8_t* quantized_values, float min_value,
                                      float max_value, float* scaling_factor);
+// LINT.ThenChange(//tensorflow/compiler/mlir/lite/quantization/lite/toco_legacy/portable_tensor_utils.h:portable_symmetric_quantize_floats)
 
 void PortableAsymmetricQuantizeFloats(const float* values, const int size,
                                       int8_t* quantized_values,