[content shell] always return the time relative to the unix epoch for layout tests
[content shell] always return the time relative to the unix epoch for layout tests

BUG=111316
R=thakis@chromium.org
TEST=fast/mediastream/RTCPeerConnection-stats.html passes

Review URL: https://codereview.chromium.org/12674011

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@188468 0039d316-1c4b-4281-b951-d872f2087c98

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