linux: make shm opening failure fatal
linux: make shm opening failure fatal

We should eventually add some recovery code path, but right now it's
completely broken (see bug) and this is the quicker fix.  FATAL logs
pop up a dialog explaining what went wrong, too, so this will help
users who don't look at the console output.

BUG=39710
TEST=sudo chmod o-w /dev/shm; verify you get a dialog that yells at you at startup

Review URL: http://codereview.chromium.org/1545003

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@42973 0039d316-1c4b-4281-b951-d872f2087c98

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