Fix: Linux file:// listings are sorted but not fully internationalized
Fix: Linux file:// listings are sorted but not fully internationalized

Changed the code such that file names are converted to UTF-16 before
comparison. Ideally, the locale should be considered, but my conclusion is that
ignoring it is a reasonable tradeoff. Passing a locale-aware comparator
(collator) from src/chrome(or src/app?) to src/base requires too much effort, in
my opinion.

BUG=16179

TEST=Open a file:// URL for a directory that contains non-ascii-named files.
Observe that files are sorted properly in the list, in a case-sensitive manner.

Review URL: http://codereview.chromium.org/149449

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@20706 0039d316-1c4b-4281-b951-d872f2087c98

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