Revert 47396 - Revert 47363  Fix build on ChromeOS by adding required return value checks.
Revert 47396 - Revert 47363  Fix build on ChromeOS by adding required return value checks.

Relands. It's irrelative.

http://buildbot.jail.google.com/buildbot/waterfall/builders/Mac10.5%20Tests%20(dbg)(2)/builds/16790

TBR=sky

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/2098007

TBR=phajdan.jr@chromium.org
Review URL: http://codereview.chromium.org/2076004

TBR=tyoshino@chromium.org
Review URL: http://codereview.chromium.org/2073009

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@47397 0039d316-1c4b-4281-b951-d872f2087c98

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