message: Print out bounded shape in HumanStringWithLayout
diff: @@ -530,7 +530,8 @@ ShapeUtil::MakeShapeWithDescendingLayoutAndSamePhysicalLayout(
  string result = StrCat(
  primitive_util::LowercasePrimitiveTypeName(shape.element_type()), "[");
  for (int i = 0; i < shape.dimensions().size(); i++) {
  - StrAppend(&result, (i > 0) ? "," : "", shape.dimensions(i));
  + StrAppend(&result, (i > 0) ? "," : "",
  + shape.is_dynamic_dimension(i) ? "<=" : "", shape.dimensions(i));
  }
  result += "]";
  if (!IsScalar(shape) && shape.IsArray()) {
  