Treat "Ascender Sans" and "Ascender Serif" as equivalent to  "Arial" and "Times New Roman" as Liberation Sans/Serif are.
Treat "Ascender Sans" and "Ascender Serif" as equivalent to 
"Arial" and "Times New Roman" as Liberation Sans/Serif are.

Ascender Sans/Serif are metrically compatible fonts with the 
Arial/Times New Roman. The names are tentative and will change
when they're finally released. 

I didn't add 'MONOSPACE'  to FontEquivClass enum for 'Courier New => Ascender Sans Mono'. We can do that when the font  and its name are finalized. 

BUG=cros:3815 (http://crosbug.com/3815 )
TEST=Without Liberation/Arial/TNR on a machine but with Ascender Sans/Serif,
go to a page specifying Arial and Times New Roman. Ascender Sans/Serif
are used in their place and there is no noticeable layout issue. 


Review URL: http://codereview.chromium.org/2674004

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@49077 0039d316-1c4b-4281-b951-d872f2087c98

Just-D/chromium-1,axinging/chromium-crosswalk,fujunwei/chromium-crosswalk,ondra-novak/chromium.src,dednal/chromium.src,bright-sparks/chromium-spacewalk,axinging/chromium-crosswalk,keishi/chromium,Fireblend/chromium-crosswalk,fujunwei/chromium-crosswalk,dushu1203/chromium.src,dednal/chromium.src,hgl888/chromium-crosswalk,markYoungH/chromium.src,anirudhSK/chromium,mogoweb/chromium-crosswalk,M4sse/chromium.src,jaruba/chromium.src,hgl888/chromium-crosswalk,ChromiumWebApps/chromium,Pluto-tv/chromium-crosswalk,rogerwang/chromium,ondra-novak/chromium.src,krieger-od/nwjs_chromium.src,ondra-novak/chromium.src,nacl-webkit/chrome_deps,PeterWangIntel/chromium-crosswalk,patrickm/chromium.src,littlstar/chromium.src,hgl888/chromium-crosswalk-efl,dednal/chromium.src,chuan9/chromium-crosswalk,timopulkkinen/BubbleFish,nacl-webkit/chrome_deps,hgl888/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,rogerwang/chromium,Fireblend/chromium-crosswalk,junmin-zhu/chromium-rivertrail,Fireblend/chromium-crosswalk,ChromiumWebApps/chromium,krieger-od/nwjs_chromium.src,crosswalk-project/chromium-crosswalk-efl,Chilledheart/chromium,rogerwang/chromium,Jonekee/chromium.src,ondra-novak/chromium.src,markYoungH/chromium.src,markYoungH/chromium.src,pozdnyakov/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,keishi/chromium,Chilledheart/chromium,krieger-od/nwjs_chromium.src,jaruba/chromium.src,dushu1203/chromium.src,ChromiumWebApps/chromium,nacl-webkit/chrome_deps,markYoungH/chromium.src,ltilve/chromium,axinging/chromium-crosswalk,patrickm/chromium.src,timopulkkinen/BubbleFish,chuan9/chromium-crosswalk,M4sse/chromium.src,robclark/chromium,fujunwei/chromium-crosswalk,axinging/chromium-crosswalk,Just-D/chromium-1,Chilledheart/chromium,markYoungH/chromium.src,hgl888/chromium-crosswalk-efl,timopulkkinen/BubbleFish,krieger-od/nwjs_chromium.src,mogoweb/chromium-crosswalk,rogerwang/chromium,ChromiumWebApps/chromium,fujunwei/chromium-crosswalk,junmin-zhu/chromium-rivertrail,mohamed--abdel-maksoud/chromium.src,zcbenz/cefode-chromium,keishi/chromium,mogoweb/chromium-crosswalk,rogerwang/chromium,axinging/chromium-crosswalk,timopulkkinen/BubbleFish,fujunwei/chromium-crosswalk,nacl-webkit/chrome_deps,keishi/chromium,junmin-zhu/chromium-rivertrail,M4sse/chromium.src,patrickm/chromium.src,nacl-webkit/chrome_deps,ltilve/chromium,pozdnyakov/chromium-crosswalk,pozdnyakov/chromium-crosswalk,anirudhSK/chromium,bright-sparks/chromium-spacewalk,anirudhSK/chromium,ltilve/chromium,patrickm/chromium.src,markYoungH/chromium.src,ChromiumWebApps/chromium,hujiajie/pa-chromium,Jonekee/chromium.src,PeterWangIntel/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,ltilve/chromium,Jonekee/chromium.src,littlstar/chromium.src,Just-D/chromium-1,krieger-od/nwjs_chromium.src,zcbenz/cefode-chromium,anirudhSK/chromium,Pluto-tv/chromium-crosswalk,anirudhSK/chromium,zcbenz/cefode-chromium,Jonekee/chromium.src,Chilledheart/chromium,zcbenz/cefode-chromium,hujiajie/pa-chromium,bright-sparks/chromium-spacewalk,junmin-zhu/chromium-rivertrail,hgl888/chromium-crosswalk-efl,hujiajie/pa-chromium,jaruba/chromium.src,markYoungH/chromium.src,hujiajie/pa-chromium,Just-D/chromium-1,Just-D/chromium-1,crosswalk-project/chromium-crosswalk-efl,zcbenz/cefode-chromium,dednal/chromium.src,Fireblend/chromium-crosswalk,Jonekee/chromium.src,anirudhSK/chromium,hgl888/chromium-crosswalk,Just-D/chromium-1,junmin-zhu/chromium-rivertrail,M4sse/chromium.src,timopulkkinen/BubbleFish,PeterWangIntel/chromium-crosswalk,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,dushu1203/chromium.src,junmin-zhu/chromium-rivertrail,dednal/chromium.src,M4sse/chromium.src,dushu1203/chromium.src,nacl-webkit/chrome_deps,markYoungH/chromium.src,crosswalk-project/chromium-crosswalk-efl,TheTypoMaster/chromium-crosswalk,hgl888/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,pozdnyakov/chromium-crosswalk,ChromiumWebApps/chromium,PeterWangIntel/chromium-crosswalk,ChromiumWebApps/chromium,TheTypoMaster/chromium-crosswalk,M4sse/chromium.src,ltilve/chromium,ChromiumWebApps/chromium,PeterWangIntel/chromium-crosswalk,Chilledheart/chromium,hujiajie/pa-chromium,fujunwei/chromium-crosswalk,jaruba/chromium.src,dushu1203/chromium.src,hgl888/chromium-crosswalk-efl,TheTypoMaster/chromium-crosswalk,anirudhSK/chromium,littlstar/chromium.src,dushu1203/chromium.src,mogoweb/chromium-crosswalk,axinging/chromium-crosswalk,littlstar/chromium.src,Pluto-tv/chromium-crosswalk,chuan9/chromium-crosswalk,chuan9/chromium-crosswalk,timopulkkinen/BubbleFish,PeterWangIntel/chromium-crosswalk,ChromiumWebApps/chromium,mogoweb/chromium-crosswalk,axinging/chromium-crosswalk,rogerwang/chromium,hgl888/chromium-crosswalk-efl,Pluto-tv/chromium-crosswalk,pozdnyakov/chromium-crosswalk,dushu1203/chromium.src,mogoweb/chromium-crosswalk,ltilve/chromium,bright-sparks/chromium-spacewalk,mogoweb/chromium-crosswalk,ltilve/chromium,jaruba/chromium.src,ltilve/chromium,markYoungH/chromium.src,M4sse/chromium.src,mohamed--abdel-maksoud/chromium.src,Fireble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