Mac: Allow statting various files needed for use by the defaults system.
Mac: Allow statting various files needed for use by the defaults system.

This CL allows statting the following files:
1) '/'
2) '/var'

And full read access for various paths where .GlobalPreferences.plist may be present.

The first 2 seem harmless to unblock and the 3rd is used by the default system.

Bug=60917
TEST=Repro steps in bug.
Cleanup: Remove stale TODO

The code in question is no longer needed since Skia has changed to remove the #define in question.

BUG=None
TEST=Compilation shouldn't break

Review URL: http://codereview.chromium.org/4134007

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@65331 0039d316-1c4b-4281-b951-d872f2087c98

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