Show the stack trace for renderer process crashes.
Show the stack trace for renderer process crashes.

Having a stack trace is helpful for developers, especially on Linux
where gdb can be slow to start and require complex command line flags
for the renderer process.

Only enabled on debug builds without the sandbox.

BUG=None


Review URL: https://chromiumcodereview.appspot.com/10918198

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@156856 0039d316-1c4b-4281-b951-d872f2087c98

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