Added a new pyauto-based flash video performance test to perf.py.
Added a new pyauto-based flash video performance test to perf.py.

This test must be run manually for now, and will be used in its current
state only temporarily to compare results across different ChromeOS
devices.

BUG=None
TEST=Verified the test runs successfully on a local Alex device.

Review URL: https://chromiumcodereview.appspot.com/9320001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@120015 0039d316-1c4b-4281-b951-d872f2087c98

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