AppendStringPiece   44 tools/gn/ninja_helper.cc   AppendStringPiece(&ret.value(),
AppendStringPiece  105 tools/gn/ninja_helper.cc   AppendStringPiece(&ret.value(), dir.substr(1));
AppendStringPiece  185 tools/gn/ninja_helper.cc   AppendStringPiece(&ret.value(),