message: Make compiler happy about size_t -> int conversion.
diff: @@ -369,8 +369,8 @@ TEST_F(Sparse3x3MatrixAlignmentMoreSpacesTest,
  TabularAlignTokens(
  &partition_, kDefaultAlignmentHandler, &pre_format_tokens_, sample_,
  // Alignment disabled over line 2
  - ByteOffsetSet(
  - {{sample_.find_first_of("\n") + 1, sample_.find("four") + 4}}),
  + ByteOffsetSet({{static_cast<int>(sample_.find_first_of("\n") + 1),
  + static_cast<int>(sample_.find("four") + 4)}}),
  40);
  EXPECT_EQ(pre_format_tokens_[1].before.break_decision,
  