[webkit-reviews] review requested: [Bug 5166] Remaining cases where the ATSUI and CG code paths measure and render the same text differently : [Attachment 4247] fix more ATSUI/CG differences

[bugzilla-request-daemon at opendarwin.org]

opendarwin.org at mitzpettel.com has asked  for review:
Bug 5166: Remaining cases where the ATSUI and CG code paths measure and render
the same text differently
http://bugzilla.opendarwin.org/show_bug.cgi?id=5166

Attachment 4247: fix more ATSUI/CG differences
http://bugzilla.opendarwin.org/attachment.cgi?id=4247&action=edit

------- Additional Comments from opendarwin.org at mitzpettel.com
Since small caps affect metrics, this patch implements them in the ATSU code
path. Synthetic bold is also taken into account to ensure consistent metrics,
but ATSU still doesn't "double-strike". The patch also implements synthetic
oblique (since it practically came for free with the synthetic bold). (I should
add a testcase for these features).