[Webkit-unassigned] [Bug 31802] Switch Chrome on Mac to Core Text APIs

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=31802


Jeremy Moskovich <playmobil at google.com> changed:

           What    |Removed                     |Added
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  Attachment #44468|                            |review?
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--- Comment #17 from Jeremy Moskovich <playmobil at google.com>  2009-12-08 05:48:10 PST ---
Created an attachment (id=44468)
 --> (https://bugs.webkit.org/attachment.cgi?id=44468)
Add optional ATSUI/Core Text runtime switch.

We observed the slowdown Dan was referring to on the Chrome perf bots and
rolled back the previous patch.

This patch adds the ability to define both USE(ATSUI) and USE(CORE_TEXT) in
which case the API is toggled at runtime.  If a port defines only one of these,
things should work exactly as they do today.

I made sure that indexAt() and collectComplexTextRunsForCharacters() are indeed
inlined by the compiler so there should be virtually no runtime hit for this
patch.

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