Revert of [telemetry] Fix decorator hack for benchmark_smoke_unittest. (patchset #1 id:1 of https://codereview.chromium.org/753433002/)
Revert of [telemetry] Fix decorator hack for benchmark_smoke_unittest. (patchset #1 id:1 of https://codereview.chromium.org/753433002/)

Reason for revert:
Looks like it didn't fix the persistent telemetry_perf_unittests failures on Mac 10.9 but instead introduced more of similar failures on other platforms (Linux and Windows).

See, for example:
http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests%20%28dbg%29%281%29/builds/35684

Original issue's description:
> [telemetry] Fix decorator hack for benchmark_smoke_unittest.
>
> Greenifying the tree, but we should do better than this hack.
>
> BUG=420615
> TEST=tools/perf/run_benchmark --browser=canary  # On Mac OS 10.9.
> TBR=tonyg
>
> Committed: https://crrev.com/c26b22807f7666296f69baac1c70c1975fff05e9
> Cr-Commit-Position: refs/heads/master@{#305183}

TBR=tonyg@chromium.org,dpranke@chromium.org,dtu@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=420615

Review URL: https://codereview.chromium.org/733463007

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#305187}

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