diff --git a/tflite/toco/graph_transformations/remove_trivial_concatenation_input.cc b/tflite/toco/graph_transformations/remove_trivial_concatenation_input.cc
index c6a07244..22e19a8f 100644
--- a/tflite/toco/graph_transformations/remove_trivial_concatenation_input.cc
+++ b/tflite/toco/graph_transformations/remove_trivial_concatenation_input.cc
@@ -26,9 +26,9 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status RemoveTrivialConcatenationInput::Run(Model* model,
-                                                          std::size_t op_index,
-                                                          bool* modified) {
+absl::Status RemoveTrivialConcatenationInput::Run(Model* model,
+                                                  std::size_t op_index,
+                                                  bool* modified) {
   *modified = false;
   // TensorFlow allows Concatenation nodes to have 0-D inputs,
   // and they are then treated as empty i.e. omitted from concatenation,
diff --git a/tflite/toco/graph_transformations/remove_trivial_fake_quant.cc b/tflite/toco/graph_transformations/remove_trivial_fake_quant.cc
index 21fa9655..3369299f 100644
--- a/tflite/toco/graph_transformations/remove_trivial_fake_quant.cc
+++ b/tflite/toco/graph_transformations/remove_trivial_fake_quant.cc
@@ -66,9 +66,8 @@ bool IsFakeQuantTrivial(GraphTransformation* transformation, const Model& model,
 }  // namespace
 
 // Removes FakeQuant ops that are trivial (have no effect, are redundant, etc).
-::tensorflow::Status RemoveTrivialFakeQuant::Run(Model* model,
-                                                 std::size_t op_index,
-                                                 bool* modified) {
+absl::Status RemoveTrivialFakeQuant::Run(Model* model, std::size_t op_index,
+                                         bool* modified) {
   *modified = false;
   const auto op_it = model->operators.begin() + op_index;
   auto* op = op_it->get();
diff --git a/tflite/toco/graph_transformations/remove_trivial_quantized_activation_func.cc b/tflite/toco/graph_transformations/remove_trivial_quantized_activation_func.cc
index 03e26a3d..e2ae8737 100644
--- a/tflite/toco/graph_transformations/remove_trivial_quantized_activation_func.cc
+++ b/tflite/toco/graph_transformations/remove_trivial_quantized_activation_func.cc
@@ -95,8 +95,9 @@ bool IsTrivialFusedActivationFunc(
 // Attempts to remove both fused and unfused activation functions if the
 // quantization params indicate that the representable values fall inside the
 // activation range.
-::tensorflow::Status RemoveTrivialQuantizedActivationFunc::Run(
-    Model* model, std::size_t op_index, bool* modified) {
+absl::Status RemoveTrivialQuantizedActivationFunc::Run(Model* model,
+                                                       std::size_t op_index,
+                                                       bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   auto* op = it->get();
diff --git a/tflite/toco/graph_transformations/remove_trivial_quantized_min_max.cc b/tflite/toco/graph_transformations/remove_trivial_quantized_min_max.cc
index 167a0012..fff77cb2 100644
--- a/tflite/toco/graph_transformations/remove_trivial_quantized_min_max.cc
+++ b/tflite/toco/graph_transformations/remove_trivial_quantized_min_max.cc
@@ -69,9 +69,9 @@ bool IsTrivialMinMax(GraphTransformation* transformation, const Model& model,
 
 // Attempts to remove min/max functions if the quantization params indicate that
 // the representable values fall inside the clip range.
-::tensorflow::Status RemoveTrivialQuantizedMinMax::Run(Model* model,
-                                                       std::size_t op_index,
-                                                       bool* modified) {
+absl::Status RemoveTrivialQuantizedMinMax::Run(Model* model,
+                                               std::size_t op_index,
+                                               bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   auto* op = it->get();
diff --git a/tflite/toco/graph_transformations/remove_trivial_reshape.cc b/tflite/toco/graph_transformations/remove_trivial_reshape.cc
index 5542066d..95ae102c 100644
--- a/tflite/toco/graph_transformations/remove_trivial_reshape.cc
+++ b/tflite/toco/graph_transformations/remove_trivial_reshape.cc
@@ -83,9 +83,8 @@ bool IsReshapeTrivial(const Model& model, const Operator& op,
 
 }  // namespace
 
-::tensorflow::Status RemoveTrivialReshape::Run(Model* model,
-                                               std::size_t op_index,
-                                               bool* modified) {
+absl::Status RemoveTrivialReshape::Run(Model* model, std::size_t op_index,
+                                       bool* modified) {
   *modified = false;
   const auto reshape_it = model->operators.begin() + op_index;
   auto* reshape_op = reshape_it->get();
diff --git a/tflite/toco/graph_transformations/remove_trivial_slice.cc b/tflite/toco/graph_transformations/remove_trivial_slice.cc
index 10b49ecf..089155e5 100644
--- a/tflite/toco/graph_transformations/remove_trivial_slice.cc
+++ b/tflite/toco/graph_transformations/remove_trivial_slice.cc
@@ -51,8 +51,8 @@ bool IsSliceTrivial(const Model& model, const Operator& op,
 
 }  // namespace
 
-::tensorflow::Status RemoveTrivialSlice::Run(Model* model, std::size_t op_index,
-                                             bool* modified) {
+absl::Status RemoveTrivialSlice::Run(Model* model, std::size_t op_index,
+                                     bool* modified) {
   *modified = false;
   const auto reshape_it = model->operators.begin() + op_index;
   auto* slice_op = reshape_it->get();
diff --git a/tflite/toco/graph_transformations/remove_unused_op.cc b/tflite/toco/graph_transformations/remove_unused_op.cc
index 9cf6c35d..feb1991b 100644
--- a/tflite/toco/graph_transformations/remove_unused_op.cc
+++ b/tflite/toco/graph_transformations/remove_unused_op.cc
@@ -27,8 +27,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status RemoveUnusedOp::Run(Model* model, std::size_t op_index,
-                                         bool* modified) {
+absl::Status RemoveUnusedOp::Run(Model* model, std::size_t op_index,
+                                 bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   const auto* op = it->get();
diff --git a/tflite/toco/graph_transformations/reorder_elementwise_unary.cc b/tflite/toco/graph_transformations/reorder_elementwise_unary.cc
index a3f2554b..ed8c0503 100644
--- a/tflite/toco/graph_transformations/reorder_elementwise_unary.cc
+++ b/tflite/toco/graph_transformations/reorder_elementwise_unary.cc
@@ -66,9 +66,8 @@ bool IsMoveOperator(OperatorType optype) {
 
 // Swap elementwise operators such that all value operators occur before all
 // element move operators, e.g. negation then transpose.
-::tensorflow::Status ReorderElementwiseUnary::Run(Model* model,
-                                                  std::size_t op_index,
-                                                  bool* modified) {
+absl::Status ReorderElementwiseUnary::Run(Model* model, std::size_t op_index,
+                                          bool* modified) {
   *modified = false;
   const auto element_op_it = model->operators.begin() + op_index;
   std::unique_ptr<Operator>& element_op = *element_op_it;
diff --git a/tflite/toco/graph_transformations/reorder_reshape_transpose.cc b/tflite/toco/graph_transformations/reorder_reshape_transpose.cc
index 8df9c310..7568c7e8 100644
--- a/tflite/toco/graph_transformations/reorder_reshape_transpose.cc
+++ b/tflite/toco/graph_transformations/reorder_reshape_transpose.cc
@@ -103,9 +103,8 @@ std::vector<int> ComputeNewPerm(std::vector<int> input_dims,
 
 // Swaps reshape-transpose to transpose-reshape whenever possible. This is
 // possible when the reshape does not affect memory ordering.
-::tensorflow::Status ReorderReshapeTranspose::Run(Model* model,
-                                                  std::size_t op_index,
-                                                  bool* modified) {
+absl::Status ReorderReshapeTranspose::Run(Model* model, std::size_t op_index,
+                                          bool* modified) {
   *modified = false;
   auto transpose_it = model->operators.begin() + op_index;
 
diff --git a/tflite/toco/graph_transformations/resolve_batch_normalization.cc b/tflite/toco/graph_transformations/resolve_batch_normalization.cc
index aa451a45..03ada581 100644
--- a/tflite/toco/graph_transformations/resolve_batch_normalization.cc
+++ b/tflite/toco/graph_transformations/resolve_batch_normalization.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveBatchNormalization::Run(Model* model,
-                                                    std::size_t op_index,
-                                                    bool* modified) {
+absl::Status ResolveBatchNormalization::Run(Model* model, std::size_t op_index,
+                                            bool* modified) {
   *modified = false;
   auto bn_it = model->operators.begin() + op_index;
   if (bn_it->get()->type != OperatorType::kBatchNormalization) {
diff --git a/tflite/toco/graph_transformations/resolve_batch_to_space_nd_attributes.cc b/tflite/toco/graph_transformations/resolve_batch_to_space_nd_attributes.cc
index 9264b83b..f764e069 100644
--- a/tflite/toco/graph_transformations/resolve_batch_to_space_nd_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_batch_to_space_nd_attributes.cc
@@ -26,9 +26,9 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveBatchToSpaceNDAttributes::Run(Model* model,
-                                                          std::size_t op_index,
-                                                          bool* modified) {
+absl::Status ResolveBatchToSpaceNDAttributes::Run(Model* model,
+                                                  std::size_t op_index,
+                                                  bool* modified) {
   *modified = false;
   const auto op_it = model->operators.begin() + op_index;
   if (op_it->get()->type != OperatorType::kBatchToSpaceND)
diff --git a/tflite/toco/graph_transformations/resolve_constant_binary.cc b/tflite/toco/graph_transformations/resolve_constant_binary.cc
index 603db26b..0771f299 100644
--- a/tflite/toco/graph_transformations/resolve_constant_binary.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_binary.cc
@@ -190,9 +190,9 @@ bool EvaluateBinaryOperatorOnConstantInputs(Model* model,
 }
 }  // namespace
 
-::tensorflow::Status ResolveConstantBinaryOperator::Run(Model* model,
-                                                        std::size_t op_index,
-                                                        bool* modified) {
+absl::Status ResolveConstantBinaryOperator::Run(Model* model,
+                                                std::size_t op_index,
+                                                bool* modified) {
   *modified = false;
   const auto binary_it = model->operators.begin() + op_index;
   const auto* binary_op = binary_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_concatenation.cc b/tflite/toco/graph_transformations/resolve_constant_concatenation.cc
index c1d35fbb..2b2ae35f 100644
--- a/tflite/toco/graph_transformations/resolve_constant_concatenation.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_concatenation.cc
@@ -137,9 +137,9 @@ void SetMinMaxForConcatenedArray(GraphTransformation* transformation,
 }  // namespace
 
 // Resolves the concatenation operator if all its inputs are constant arrays.
-::tensorflow::Status ResolveConstantConcatenation::Run(Model* model,
-                                                       std::size_t op_index,
-                                                       bool* modified) {
+absl::Status ResolveConstantConcatenation::Run(Model* model,
+                                               std::size_t op_index,
+                                               bool* modified) {
   *modified = false;
   const auto concat_it = model->operators.begin() + op_index;
   const auto* concat_base_op = concat_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_fake_quant.cc b/tflite/toco/graph_transformations/resolve_constant_fake_quant.cc
index 39094ac1..7b556247 100644
--- a/tflite/toco/graph_transformations/resolve_constant_fake_quant.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_fake_quant.cc
@@ -62,9 +62,8 @@ void GetBoundsForQuantizedDataType(ArrayDataType quantized_data_type,
   }
 }
 
-::tensorflow::Status ResolveConstantFakeQuant::Run(Model* model,
-                                                   std::size_t op_index,
-                                                   bool* modified) {
+absl::Status ResolveConstantFakeQuant::Run(Model* model, std::size_t op_index,
+                                           bool* modified) {
   *modified = false;
   const auto fakequant_it = model->operators.begin() + op_index;
   const auto* fakequant_base_op = fakequant_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_fill.cc b/tflite/toco/graph_transformations/resolve_constant_fill.cc
index ed63a73d..832eb482 100644
--- a/tflite/toco/graph_transformations/resolve_constant_fill.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_fill.cc
@@ -43,9 +43,8 @@ bool ComputeFillArray(Model* model, FillOperator* op) {
   return true;
 }
 
-::tensorflow::Status ResolveConstantFill::Run(Model* model,
-                                              std::size_t op_index,
-                                              bool* modified) {
+absl::Status ResolveConstantFill::Run(Model* model, std::size_t op_index,
+                                      bool* modified) {
   *modified = false;
   const auto fill_it = model->operators.begin() + op_index;
   auto* base_op = fill_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_gather.cc b/tflite/toco/graph_transformations/resolve_constant_gather.cc
index e61c4ada..41535242 100644
--- a/tflite/toco/graph_transformations/resolve_constant_gather.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_gather.cc
@@ -67,9 +67,8 @@ inline void Gather(const Array& input_array, const Array& coords_array,
 // Resolves a constant Gather operation.
 // This simply performs the gather and produces the output array with the
 // appropriate values.
-::tensorflow::Status ResolveConstantGather::Run(Model* model,
-                                                std::size_t op_index,
-                                                bool* modified) {
+absl::Status ResolveConstantGather::Run(Model* model, std::size_t op_index,
+                                        bool* modified) {
   *modified = false;
   auto it = model->operators.begin() + op_index;
   const auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_pack.cc b/tflite/toco/graph_transformations/resolve_constant_pack.cc
index 70d5c661..2090a774 100644
--- a/tflite/toco/graph_transformations/resolve_constant_pack.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_pack.cc
@@ -51,9 +51,8 @@ void Pack(Model* model, PackOperator const& op) {
 
 }  // namespace
 
-::tensorflow::Status ResolveConstantPack::Run(Model* model,
-                                              std::size_t op_index,
-                                              bool* modified) {
+absl::Status ResolveConstantPack::Run(Model* model, std::size_t op_index,
+                                      bool* modified) {
   *modified = false;
   auto it = model->operators.begin() + op_index;
   const auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_random_uniform.cc b/tflite/toco/graph_transformations/resolve_constant_random_uniform.cc
index 2e4896bf..a5be4cc1 100644
--- a/tflite/toco/graph_transformations/resolve_constant_random_uniform.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_random_uniform.cc
@@ -60,9 +60,9 @@ bool ComputeRandomUniformArray(Model* model, RandomUniformOperator* op) {
   return true;
 }
 
-::tensorflow::Status ResolveConstantRandomUniform::Run(Model* model,
-                                                       std::size_t op_index,
-                                                       bool* modified) {
+absl::Status ResolveConstantRandomUniform::Run(Model* model,
+                                               std::size_t op_index,
+                                               bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_range.cc b/tflite/toco/graph_transformations/resolve_constant_range.cc
index 05548124..223ced49 100644
--- a/tflite/toco/graph_transformations/resolve_constant_range.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_range.cc
@@ -43,9 +43,8 @@ void FillRangeOutput(const Array& start_array, const Array& limit_array,
   CHECK_EQ(buffer.data.size(), output_array->shape().dims()[0]);
 }
 
-::tensorflow::Status ResolveConstantRange::Run(Model* model,
-                                               std::size_t op_index,
-                                               bool* modified) {
+absl::Status ResolveConstantRange::Run(Model* model, std::size_t op_index,
+                                       bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_reshape.cc b/tflite/toco/graph_transformations/resolve_constant_reshape.cc
index 94eb217d..5309492c 100644
--- a/tflite/toco/graph_transformations/resolve_constant_reshape.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_reshape.cc
@@ -24,9 +24,8 @@ limitations under the License.
 namespace toco {
 
 // Resolves a constant reshape operation by copying the buffer.
-::tensorflow::Status ResolveConstantReshape::Run(Model* model,
-                                                 std::size_t op_index,
-                                                 bool* modified) {
+absl::Status ResolveConstantReshape::Run(Model* model, std::size_t op_index,
+                                         bool* modified) {
   *modified = false;
   auto it = model->operators.begin() + op_index;
   const auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_select.cc b/tflite/toco/graph_transformations/resolve_constant_select.cc
index 4a6fbd3d..04376873 100644
--- a/tflite/toco/graph_transformations/resolve_constant_select.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_select.cc
@@ -29,9 +29,8 @@ namespace toco {
 // This implementation is looking strictly for all-or-nothing on the select
 // condition. It's possible to enhance this by looking per-element and possibly
 // producing a Mul op.
-::tensorflow::Status ResolveConstantSelect::Run(Model* model,
-                                                std::size_t op_index,
-                                                bool* modified) {
+absl::Status ResolveConstantSelect::Run(Model* model, std::size_t op_index,
+                                        bool* modified) {
   *modified = false;
   auto it = model->operators.begin() + op_index;
   const auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_shape_or_rank.cc b/tflite/toco/graph_transformations/resolve_constant_shape_or_rank.cc
index f9098a28..f3f551a5 100644
--- a/tflite/toco/graph_transformations/resolve_constant_shape_or_rank.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_shape_or_rank.cc
@@ -21,9 +21,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveConstantShapeOrRank::Run(Model* model,
-                                                     std::size_t op_index,
-                                                     bool* modified) {
+absl::Status ResolveConstantShapeOrRank::Run(Model* model, std::size_t op_index,
+                                             bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   const auto* op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_slice.cc b/tflite/toco/graph_transformations/resolve_constant_slice.cc
index adabd9e9..0f4ecdba 100644
--- a/tflite/toco/graph_transformations/resolve_constant_slice.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_slice.cc
@@ -88,9 +88,8 @@ bool Slice(SliceOperator const& op, Array const& input_array,
 
 }  // namespace
 
-::tensorflow::Status ResolveConstantSlice::Run(Model* model,
-                                               std::size_t op_index,
-                                               bool* modified) {
+absl::Status ResolveConstantSlice::Run(Model* model, std::size_t op_index,
+                                       bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   const auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_strided_slice.cc b/tflite/toco/graph_transformations/resolve_constant_strided_slice.cc
index 02305bc7..c904e684 100644
--- a/tflite/toco/graph_transformations/resolve_constant_strided_slice.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_strided_slice.cc
@@ -100,9 +100,9 @@ void StridedSlice(StridedSliceOperator const& op, Array const& input_array,
 
 }  // anonymous namespace
 
-::tensorflow::Status ResolveConstantStridedSlice::Run(Model* model,
-                                                      std::size_t op_index,
-                                                      bool* modified) {
+absl::Status ResolveConstantStridedSlice::Run(Model* model,
+                                              std::size_t op_index,
+                                              bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   const auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_tile.cc b/tflite/toco/graph_transformations/resolve_constant_tile.cc
index 5c568ce3..a6deb75e 100644
--- a/tflite/toco/graph_transformations/resolve_constant_tile.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_tile.cc
@@ -100,9 +100,8 @@ inline void Tile(const Array& input_array, const Array& multiples_array,
 }  // namespace
 
 // Resolves a constant Tile operation.
-::tensorflow::Status ResolveConstantTile::Run(Model* model,
-                                              std::size_t op_index,
-                                              bool* modified) {
+absl::Status ResolveConstantTile::Run(Model* model, std::size_t op_index,
+                                      bool* modified) {
   *modified = false;
   auto it = model->operators.begin() + op_index;
   const auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_transpose.cc b/tflite/toco/graph_transformations/resolve_constant_transpose.cc
index 0c67facb..64c1adc8 100644
--- a/tflite/toco/graph_transformations/resolve_constant_transpose.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_transpose.cc
@@ -103,9 +103,8 @@ void Transpose(Model* model, const Array& input_array,
 
 }  // namespace
 
-::tensorflow::Status ResolveConstantTranspose::Run(Model* model,
-                                                   std::size_t op_index,
-                                                   bool* modified) {
+absl::Status ResolveConstantTranspose::Run(Model* model, std::size_t op_index,
+                                           bool* modified) {
   *modified = false;
   auto it = model->operators.begin() + op_index;
   const auto* base_op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_constant_unary.cc b/tflite/toco/graph_transformations/resolve_constant_unary.cc
index 6238eb83..c605f1e5 100644
--- a/tflite/toco/graph_transformations/resolve_constant_unary.cc
+++ b/tflite/toco/graph_transformations/resolve_constant_unary.cc
@@ -116,9 +116,9 @@ bool CopyMinMaxFromFirstInput(const Operator& op, Model* model) {
   return true;
 }
 
-::tensorflow::Status ResolveConstantUnaryOperator::Run(Model* model,
-                                                       std::size_t op_index,
-                                                       bool* modified) {
+absl::Status ResolveConstantUnaryOperator::Run(Model* model,
+                                               std::size_t op_index,
+                                               bool* modified) {
   *modified = false;
   const auto unary_it = model->operators.begin() + op_index;
   const auto* unary_op = unary_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_fake_quant_args_from_vars.cc b/tflite/toco/graph_transformations/resolve_fake_quant_args_from_vars.cc
index 7027a276..02a231d9 100644
--- a/tflite/toco/graph_transformations/resolve_fake_quant_args_from_vars.cc
+++ b/tflite/toco/graph_transformations/resolve_fake_quant_args_from_vars.cc
@@ -27,9 +27,9 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveFakeQuantArgsFromVars::Run(Model* model,
-                                                       std::size_t op_index,
-                                                       bool* modified) {
+absl::Status ResolveFakeQuantArgsFromVars::Run(Model* model,
+                                               std::size_t op_index,
+                                               bool* modified) {
   *modified = false;
   const auto fakequant_it = model->operators.begin() + op_index;
   auto* fakequant_base_op = fakequant_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_gather_attributes.cc b/tflite/toco/graph_transformations/resolve_gather_attributes.cc
index 15e880ee..c2e7d3ab 100644
--- a/tflite/toco/graph_transformations/resolve_gather_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_gather_attributes.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveGatherAttributes::Run(Model* model,
-                                                  std::size_t op_index,
-                                                  bool* modified) {
+absl::Status ResolveGatherAttributes::Run(Model* model, std::size_t op_index,
+                                          bool* modified) {
   *modified = false;
   auto* gather_op = model->operators[op_index].get();
   if (gather_op->type != OperatorType::kGather) return absl::OkStatus();
diff --git a/tflite/toco/graph_transformations/resolve_multiply_by_zero.cc b/tflite/toco/graph_transformations/resolve_multiply_by_zero.cc
index 319c08ff..25d71114 100644
--- a/tflite/toco/graph_transformations/resolve_multiply_by_zero.cc
+++ b/tflite/toco/graph_transformations/resolve_multiply_by_zero.cc
@@ -54,9 +54,8 @@ void FillArrayWithZeros(Array* array) {
 // Removes a multiplication by array of constant zeros by making the output
 // array to an array of constant zeros and removing the input arrays if they
 // are no longer needed.
-::tensorflow::Status ResolveMultiplyByZero::Run(Model* model,
-                                                std::size_t op_index,
-                                                bool* modified) {
+absl::Status ResolveMultiplyByZero::Run(Model* model, std::size_t op_index,
+                                        bool* modified) {
   *modified = false;
   const auto mul_it = model->operators.begin() + op_index;
   auto* mul_op = mul_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_pad_attributes.cc b/tflite/toco/graph_transformations/resolve_pad_attributes.cc
index ece6600a..135b09c2 100644
--- a/tflite/toco/graph_transformations/resolve_pad_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_pad_attributes.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolvePadAttributes::Run(Model* model,
-                                               std::size_t op_index,
-                                               bool* modified) {
+absl::Status ResolvePadAttributes::Run(Model* model, std::size_t op_index,
+                                       bool* modified) {
   *modified = false;
   const auto pad_it = model->operators.begin() + op_index;
   auto* pad_op = pad_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_padv2_attributes.cc b/tflite/toco/graph_transformations/resolve_padv2_attributes.cc
index c726bc23..4bbbf895 100644
--- a/tflite/toco/graph_transformations/resolve_padv2_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_padv2_attributes.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolvePadV2Attributes::Run(Model* model,
-                                                 std::size_t op_index,
-                                                 bool* modified) {
+absl::Status ResolvePadV2Attributes::Run(Model* model, std::size_t op_index,
+                                         bool* modified) {
   *modified = false;
   const auto pad_it = model->operators.begin() + op_index;
   auto* pad_op = pad_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_reduce_attributes.cc b/tflite/toco/graph_transformations/resolve_reduce_attributes.cc
index 7d3a1610..cc2f2516 100644
--- a/tflite/toco/graph_transformations/resolve_reduce_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_reduce_attributes.cc
@@ -45,9 +45,8 @@ bool ResolveAttributes(Model* model, T* op) {
   return true;
 }
 
-::tensorflow::Status ResolveReduceAttributes::Run(Model* model,
-                                                  std::size_t op_index,
-                                                  bool* modified) {
+absl::Status ResolveReduceAttributes::Run(Model* model, std::size_t op_index,
+                                          bool* modified) {
   *modified = false;
   Operator* op = model->operators[op_index].get();
   switch (op->type) {
diff --git a/tflite/toco/graph_transformations/resolve_reorder_axes.cc b/tflite/toco/graph_transformations/resolve_reorder_axes.cc
index 32de03dc..52f8999b 100644
--- a/tflite/toco/graph_transformations/resolve_reorder_axes.cc
+++ b/tflite/toco/graph_transformations/resolve_reorder_axes.cc
@@ -82,8 +82,8 @@ void ReorderAxes(AxesOrder input_axes_order, AxesOrder output_axes_order,
   }
 }
 
-::tensorflow::Status ResolveReorderAxes::Run(Model* model, std::size_t op_index,
-                                             bool* modified) {
+absl::Status ResolveReorderAxes::Run(Model* model, std::size_t op_index,
+                                     bool* modified) {
   *modified = false;
   auto it = model->operators.begin() + op_index;
   auto* op = it->get();
diff --git a/tflite/toco/graph_transformations/resolve_reshape_attributes.cc b/tflite/toco/graph_transformations/resolve_reshape_attributes.cc
index 19a56fc3..598fefcf 100644
--- a/tflite/toco/graph_transformations/resolve_reshape_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_reshape_attributes.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveReshapeAttributes::Run(Model* model,
-                                                   std::size_t op_index,
-                                                   bool* modified) {
+absl::Status ResolveReshapeAttributes::Run(Model* model, std::size_t op_index,
+                                           bool* modified) {
   *modified = false;
   const auto reshape_it = model->operators.begin() + op_index;
   auto* reshape_op = reshape_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_slice_attributes.cc b/tflite/toco/graph_transformations/resolve_slice_attributes.cc
index 280cf7f5..7b499dbe 100644
--- a/tflite/toco/graph_transformations/resolve_slice_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_slice_attributes.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveSliceAttributes::Run(Model* model,
-                                                 std::size_t op_index,
-                                                 bool* modified) {
+absl::Status ResolveSliceAttributes::Run(Model* model, std::size_t op_index,
+                                         bool* modified) {
   *modified = false;
   const auto slice_it = model->operators.begin() + op_index;
   auto* slice_op = slice_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_space_to_batch_nd_attributes.cc b/tflite/toco/graph_transformations/resolve_space_to_batch_nd_attributes.cc
index b8c7a923..bb845723 100644
--- a/tflite/toco/graph_transformations/resolve_space_to_batch_nd_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_space_to_batch_nd_attributes.cc
@@ -26,9 +26,9 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveSpaceToBatchNDAttributes::Run(Model* model,
-                                                          std::size_t op_index,
-                                                          bool* modified) {
+absl::Status ResolveSpaceToBatchNDAttributes::Run(Model* model,
+                                                  std::size_t op_index,
+                                                  bool* modified) {
   *modified = false;
   const auto op_it = model->operators.begin() + op_index;
   if (op_it->get()->type != OperatorType::kSpaceToBatchND)
diff --git a/tflite/toco/graph_transformations/resolve_squeeze_attributes.cc b/tflite/toco/graph_transformations/resolve_squeeze_attributes.cc
index 48acacf3..9cd46931 100644
--- a/tflite/toco/graph_transformations/resolve_squeeze_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_squeeze_attributes.cc
@@ -27,9 +27,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveSqueezeAttributes::Run(Model* model,
-                                                   std::size_t op_index,
-                                                   bool* modified) {
+absl::Status ResolveSqueezeAttributes::Run(Model* model, std::size_t op_index,
+                                           bool* modified) {
   *modified = false;
   auto* squeeze_op = model->operators[op_index].get();
   if (squeeze_op->type != OperatorType::kSqueeze) {
diff --git a/tflite/toco/graph_transformations/resolve_strided_slice_attributes.cc b/tflite/toco/graph_transformations/resolve_strided_slice_attributes.cc
index e17b1d1b..5ec26afd 100644
--- a/tflite/toco/graph_transformations/resolve_strided_slice_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_strided_slice_attributes.cc
@@ -39,9 +39,9 @@ int PadAttributeArray(Array* attribute_array, std::vector<int> pad_values,
   return mask;
 }
 
-::tensorflow::Status ResolveStridedSliceAttributes::Run(Model* model,
-                                                        std::size_t op_index,
-                                                        bool* modified) {
+absl::Status ResolveStridedSliceAttributes::Run(Model* model,
+                                                std::size_t op_index,
+                                                bool* modified) {
   *modified = false;
   const auto slice_it = model->operators.begin() + op_index;
   auto* slice_op = slice_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_tensorflow_concat.cc b/tflite/toco/graph_transformations/resolve_tensorflow_concat.cc
index 8bd58d26..b54c5b98 100644
--- a/tflite/toco/graph_transformations/resolve_tensorflow_concat.cc
+++ b/tflite/toco/graph_transformations/resolve_tensorflow_concat.cc
@@ -27,9 +27,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveTensorFlowConcat::Run(Model* model,
-                                                  std::size_t op_index,
-                                                  bool* modified) {
+absl::Status ResolveTensorFlowConcat::Run(Model* model, std::size_t op_index,
+                                          bool* modified) {
   *modified = false;
   auto concat_it = model->operators.begin() + op_index;
   const auto* tf_concat_op = concat_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_tensorflow_matmul.cc b/tflite/toco/graph_transformations/resolve_tensorflow_matmul.cc
index 2e74d9a2..879f85cc 100644
--- a/tflite/toco/graph_transformations/resolve_tensorflow_matmul.cc
+++ b/tflite/toco/graph_transformations/resolve_tensorflow_matmul.cc
@@ -59,9 +59,8 @@ TransposeOperator* FindTransposeOpWithInput(const Model& model,
 
 }  // namespace
 
-::tensorflow::Status ResolveTensorFlowMatMul::Run(Model* model,
-                                                  std::size_t op_index,
-                                                  bool* modified) {
+absl::Status ResolveTensorFlowMatMul::Run(Model* model, std::size_t op_index,
+                                          bool* modified) {
   *modified = false;
   auto matmul_it = model->operators.begin() + op_index;
   if (matmul_it->get()->type != OperatorType::kMatMul) {
diff --git a/tflite/toco/graph_transformations/resolve_tensorflow_merge.cc b/tflite/toco/graph_transformations/resolve_tensorflow_merge.cc
index a951c5fb..0702660c 100644
--- a/tflite/toco/graph_transformations/resolve_tensorflow_merge.cc
+++ b/tflite/toco/graph_transformations/resolve_tensorflow_merge.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveTensorFlowMerge::Run(Model* model,
-                                                 std::size_t op_index,
-                                                 bool* modified) {
+absl::Status ResolveTensorFlowMerge::Run(Model* model, std::size_t op_index,
+                                         bool* modified) {
   *modified = false;
   const auto merge_it = model->operators.begin() + op_index;
   const auto* merge_op = merge_it->get();
diff --git a/tflite/toco/graph_transformations/resolve_tensorflow_switch.cc b/tflite/toco/graph_transformations/resolve_tensorflow_switch.cc
index d88abca3..2853cd27 100644
--- a/tflite/toco/graph_transformations/resolve_tensorflow_switch.cc
+++ b/tflite/toco/graph_transformations/resolve_tensorflow_switch.cc
@@ -27,9 +27,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveTensorFlowSwitch::Run(Model* model,
-                                                  std::size_t op_index,
-                                                  bool* modified) {
+absl::Status ResolveTensorFlowSwitch::Run(Model* model, std::size_t op_index,
+                                          bool* modified) {
   *modified = false;
   const auto switch_it = model->operators.begin() + op_index;
   const auto* switch_op = switch_it->get();
@@ -99,7 +98,7 @@ ::tensorflow::Status ResolveTensorFlowSwitch::Run(Model* model,
         // Let us guard our assumption that only Merge nodes consume the outputs
         // of Switch nodes:
         if (other_op->type != OperatorType::kMerge) {
-          return ::tensorflow::Status(
+          return absl::Status(
               absl::StatusCode::kFailedPrecondition,
               ::absl::StrCat(
                   "Found ", HelpfulOperatorTypeName(*other_op),
diff --git a/tflite/toco/graph_transformations/resolve_transpose_attributes.cc b/tflite/toco/graph_transformations/resolve_transpose_attributes.cc
index fd45cb4b..ca05e378 100644
--- a/tflite/toco/graph_transformations/resolve_transpose_attributes.cc
+++ b/tflite/toco/graph_transformations/resolve_transpose_attributes.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ResolveTransposeAttributes::Run(Model* model,
-                                                     std::size_t op_index,
-                                                     bool* modified) {
+absl::Status ResolveTransposeAttributes::Run(Model* model, std::size_t op_index,
+                                             bool* modified) {
   *modified = false;
   const auto op_it = model->operators.begin() + op_index;
   if (op_it->get()->type != OperatorType::kTranspose) return absl::OkStatus();
diff --git a/tflite/toco/graph_transformations/shuffle_fc_weights.cc b/tflite/toco/graph_transformations/shuffle_fc_weights.cc
index 2c372c27..3dcacc2b 100644
--- a/tflite/toco/graph_transformations/shuffle_fc_weights.cc
+++ b/tflite/toco/graph_transformations/shuffle_fc_weights.cc
@@ -29,8 +29,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status ShuffleFCWeights::Run(Model* model, std::size_t op_index,
-                                           bool* modified) {
+absl::Status ShuffleFCWeights::Run(Model* model, std::size_t op_index,
+                                   bool* modified) {
   *modified = false;
   Operator* op = model->operators[op_index].get();
   if (op->type != OperatorType::kFullyConnected) {
diff --git a/tflite/toco/graph_transformations/unfuse_activation_functions.cc b/tflite/toco/graph_transformations/unfuse_activation_functions.cc
index 83778728..66eab3c8 100644
--- a/tflite/toco/graph_transformations/unfuse_activation_functions.cc
+++ b/tflite/toco/graph_transformations/unfuse_activation_functions.cc
@@ -27,9 +27,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status UnfuseActivationFunctions::Run(Model* model,
-                                                    std::size_t op_index,
-                                                    bool* modified) {
+absl::Status UnfuseActivationFunctions::Run(Model* model, std::size_t op_index,
+                                            bool* modified) {
   *modified = false;
   const auto it = model->operators.begin() + op_index;
   auto* op = it->get();
diff --git a/tflite/toco/graph_transformations/unpartition_embedding_lookup.cc b/tflite/toco/graph_transformations/unpartition_embedding_lookup.cc
index f8ffe70f..9ebc29a8 100644
--- a/tflite/toco/graph_transformations/unpartition_embedding_lookup.cc
+++ b/tflite/toco/graph_transformations/unpartition_embedding_lookup.cc
@@ -26,9 +26,8 @@ limitations under the License.
 
 namespace toco {
 
-::tensorflow::Status UnpartitionEmbeddingLookup::Run(Model* model,
-                                                     std::size_t op_index,
-                                                     bool* modified) {
+absl::Status UnpartitionEmbeddingLookup::Run(Model* model, std::size_t op_index,
+                                             bool* modified) {
   *modified = false;
   // Collapses a partitioned tf.nn.embedding_lookup back into a single Gather.
   // https://www.tensorflow.org/api_docs/python/tf/nn/embedding_lookup
diff --git a/tflite/toco/graph_transformations/unroll_batch_matmul.cc b/tflite/toco/graph_transformations/unroll_batch_matmul.cc
index 3e69608b..d8a8b149 100644
--- a/tflite/toco/graph_transformations/unroll_batch_matmul.cc
+++ b/tflite/toco/graph_transformations/unroll_batch_matmul.cc
@@ -137,8 +137,8 @@ TransposeOperator* TransposeInput(const std::string& input, Model* model) {
 // Unrolls a BatchMatMul on the batch dimension.
 // We need to slice each batch out of the inputs, matmul them individually, then
 // stack them all back together at the end.
-::tensorflow::Status UnrollBatchMatMul::Run(Model* model, std::size_t op_index,
-                                            bool* modified) {
+absl::Status UnrollBatchMatMul::Run(Model* model, std::size_t op_index,
+                                    bool* modified) {
   *modified = false;
   auto batch_op_it = model->operators.begin() + op_index;
   if (batch_op_it->get()->type != OperatorType::kBatchMatMul) {