message: [XLA] Use absl::Hex instead of tensorflow::strings::Hex.
diff: @@ -48,8 +48,8 @@ Status CompareFloatsBitwiseEqual(
  return InvalidArgument(
  "floating values are not bitwise-equal; and equality testing "
  "was requested: %s=%g=%a vs %s=%g=%a at array index %s",
  - StrCat(tensorflow::strings::Hex(ulhs)).c_str(), lhs_double, lhs_double,
  - StrCat(tensorflow::strings::Hex(urhs)).c_str(), rhs_double, rhs_double,
  + StrCat(absl::Hex(ulhs)).c_str(), lhs_double, lhs_double,
  + StrCat(absl::Hex(urhs)).c_str(), rhs_double, rhs_double,
  LiteralUtil::MultiIndexAsString(multi_index).c_str());
  }
  return Status::OK();
  