Glyphs may fail to render when using SVG font

https://bugs.webkit.org/show_bug.cgi?id=115193

Reviewed by Simon Fraser.

Calling SimpleFontData::applyTransforms() when the font used is
an SVG font makes little sense since Core Text doesn’t know or
understand SVG fonts and would be passed some other, unrelated
platform font.

* platform/graphics/SimpleFontData.h:
(WebCore::SimpleFontData::applyTransforms):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149144 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Task-number: QTBUG-31663
Change-Id: Ic631da7c64e477c4f6199053584d36827bd3a5b1
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>
Reviewed-by: Robert Loehning <robert.loehning@digia.com>