Revert of [Telemetry] Disable failing tough animation cases on mac. (https://codereview.chromium.org/273713002/)
Revert of [Telemetry] Disable failing tough animation cases on mac. (https://codereview.chromium.org/273713002/)

Reason for revert:
We expect the underlying failure to be fixed now.

BUG=368767
TBR=caseq@chromium.org

Original issue's description:
> [Telemetry] Disable failing tough animation cases on mac.
> 
> http://chromegw/i/chromium.perf/builders/Mac%2010.6%20Perf%20%285%29/builds/3773/steps/smoothness.tough_animation_cases/logs/stdio
> 
> BUG=368767
> TBR=dtu@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=268878

Review URL: https://codereview.chromium.org/357743002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@279856 0039d316-1c4b-4281-b951-d872f2087c98

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