kAltProportionalTextSelector 370 third_party/harfbuzz-ng/src/hb-coretext.cc { 'palt', kTextSpacingType, kAltProportionalTextSelector, 7 }, kAltProportionalTextSelector 409 third_party/harfbuzz-ng/src/hb-coretext.cc { 'valt', kTextSpacingType, kAltProportionalTextSelector, 7 }, kAltProportionalTextSelector 413 third_party/harfbuzz-ng/src/hb-coretext.cc { 'vpal', kTextSpacingType, kAltProportionalTextSelector, 7 },