discrepancy between line breaking and max width computation.

Rubber-stamped by Anders Carlsson.

* platform/graphics/mac/ComplexTextController.cpp:
(WebCore::ComplexTextController::adjustGlyphsAndAdvances):

LayoutTests: Reveted r129176 and r129185.

Rubber-stamped by Anders Carlsson.

* platform/mac-lion/fast/writing-mode/text-orientation-basic-expected.txt:
* platform/mac/fast/text/emphasis-expected.png:
* platform/mac/fast/text/emphasis-expected.txt:
* platform/mac/fast/text/sticky-typesetting-features-expected.png:
* platform/mac/fast/text/sticky-typesetting-features-expected.txt:
* platform/mac/fast/text/thai-combining-mark-positioning-expected.png:
* platform/mac/fast/text/thai-combining-mark-positioning-expected.txt:
* platform/mac/fast/writing-mode/text-orientation-basic-expected.png:
* platform/mac/fast/writing-mode/text-orientation-basic-expected.txt:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@129389 268f45cc-cd09-0410-ab3c-d52691b4dbfc