Tries to retrieve all post_match_families in the font file to support non-asc...

Tries to retrieve all post_match_families in the font file to support non-ascii
fonts. This patch should fix CHECK failures like this:

yusukes@yusukes-desktop:~/chromium2/src/build$ ../sconsbuild/Release/chrome
[20666:20666:544922424350:FATAL:/home/yusukes/chromium2/src/app/gfx/font_skia.cc(90)]
Check failed: tf. Could not find font: IPA モナー Pゴシック

Since some fonts have multiple font family names, the FontConfigDirect::Match()
function should try to compare post_config_family with _all_ family names in the
font, rather than with only the first (usually English) family name. For
example, a popular Japanese font called ipagpmona.ttf has two family names, an
English name and an internationalized (Japanese) one, and post_config_family for
the font can be either the English name or the Japanese name depending on the
situation.

$ showttf /usr/share/fonts/truetype/ttf-ipamonafont/ipagp-mona.ttf | egrep -A 1
-e
"platform=1 .* Family" 
   platform=1 plat spec encoding=0 language=0 name=1 Family
    strlen=14  stroff=288 IPAMonaPGothic
--
   platform=1 plat spec encoding=1 language=b name=1 Family
    strlen=20  stroff=871 IPA <83><82><83>i<81>[ P<83>S<83>V<83>b<83>N

Original review URL: http://codereview.chromium.org/155751 

BUG=12530
TEST=none


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=21063