Record startup time closer to where the browser really started
Record startup time closer to where the browser really started

startup time is used as a timestamp to discover new crashes (determined by
entries in crash dir since the recorded startup time) in the ui_test
framework. Initialing it in the constructor is problematic for PyAuto since
python unittest initialzes testcase objects for all tests together, so all
instances will have about the same startup time, and this leads to crashes
from one test being mismatched to the error reporting in another.

This CL fixes it by moving startup time initialization to SetUp, which is
closer to the time the browser actually gets launched.
Consciously, Not moving to LaunchBrowserAndServer.

BUG=51463

TEST=

Review URL: http://codereview.chromium.org/3670004

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@62314 0039d316-1c4b-4281-b951-d872f2087c98

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