linux: hide more warnings in third-party code
linux: hide more warnings in third-party code

I was confused why we were getting warnings related to format
strings, since they are off in gcc unless you use -Wall or
explicitly enable it, but it turns out that the man page calls
out that it is specially enabled on Ubuntu.

Review URL: http://codereview.chromium.org/6469002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@74351 0039d316-1c4b-4281-b951-d872f2087c98

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