message: Adding QuantizedMatMul to the op_level_cost_estimator
diff: @@ -64,6 +64,7 @@ constexpr char kAvgPool[] = "AvgPool";
  constexpr char kAvgPoolGrad[] = "AvgPoolGrad";
  constexpr char kFusedBatchNorm[] = "FusedBatchNorm";
  constexpr char kFusedBatchNormGrad[] = "FusedBatchNormGrad";
  +constexpr char kQuantizedMatMul[] = "QuantizedMatMul";
  constexpr char kQuantizedMatMulV2[] = "QuantizedMatMulV2";
  // Persistent ops.
  constexpr char kConst[] = "Const";
  @@ -243,6 +244,7 @@ OpLevelCostEstimator::OpLevelCostEstimator() {
  {kMatMul, wrap(&OpLevelCostEstimator::PredictMatMul)},
  {kSparseMatMul, wrap(&OpLevelCostEstimator::PredictMatMul)},
  {kBatchMatMul, wrap(&OpLevelCostEstimator::PredictBatchMatMul)},
  + {kQuantizedMatMul, wrap(&OpLevelCostEstimator::PredictMatMul)},
  {kQuantizedMatMulV2, wrap(&OpLevelCostEstimator::PredictMatMul)},
  {kNoOp, wrap(&OpLevelCostEstimator::PredictNoOp)},
  