font-size:0 text runs has non zero width in case of Windows Safari.

font-size:0 text runs has non zero width in case of Windows Safari.
https://bugs.webkit.org/show_bug.cgi?id=83559

Patch by Pravinin D <pravind.2k4@gmail.com> on 2012-04-12
Reviewed by Dan Bernstein.

Test case already exits.
LayoutTest/fast/text/font-size-zero.html

* platform/graphics/win/SimpleFontDataCGWin.cpp:
(WebCore):
(WebCore::SimpleFontData::platformBoundsForGlyph):
(WebCore::SimpleFontData::platformWidthForGlyph):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@113989 268f45cc-cd09-0410-ab3c-d52691b4dbfc