message: Estimate Squeeze cost in the same way as Reshape.
diff: @@ -45,6 +45,7 @@ constexpr char kIdentityN[] = "IdentityN";
  constexpr char kRefIdentity[] = "RefIdentity";
  constexpr char kNoOp[] = "NoOp";
  constexpr char kReshape[] = "Reshape";
  +constexpr char kSqueeze[] = "Squeeze";
  constexpr char kRecv[] = "_Recv";
  constexpr char kSend[] = "_Send";
  constexpr char kBatchMatMul[] = "BatchMatMul";
  @@ -232,6 +233,7 @@ OpLevelCostEstimator::OpLevelCostEstimator() {
  {kStopGradient, wrap(&OpLevelCostEstimator::PredictIdentity)},
  {kPreventGradient, wrap(&OpLevelCostEstimator::PredictIdentity)},
  {kReshape, wrap(&OpLevelCostEstimator::PredictIdentity)},
  + {kSqueeze, wrap(&OpLevelCostEstimator::PredictIdentity)},
  {kRecv, wrap(&OpLevelCostEstimator::PredictIdentity)},
  {kSend, wrap(&OpLevelCostEstimator::PredictIdentity)},
  