Make quiesence test best-effort for the blink_style benchmark

tools/perf/benchmarks/blink_style.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from telemetry import benchmark
 
 from measurements import blink_style
 import page_sets
 
-@benchmark.Disabled # http://crbug.com/479048
 class BlinkStyleTop25(benchmark.Benchmark):
   """Measures performance of Blink's style engine (CSS Parsing, Style Recalc,
   etc.) on the top 25 pages.
   """
   test = blink_style.BlinkStyle
   page_set = page_sets.Top25PageSet
 
   @classmethod
   def Name(cls):
     return 'blink_style.top_25'
 
 
 @benchmark.Enabled('android')
 class BlinkStyleKeyMobileSites(benchmark.Benchmark):
   """Measures performance of Blink's style engine (CSS Parsing, Style Recalc,
   etc.) on key mobile sites.
   """
   test = blink_style.BlinkStyle
   page_set = page_sets.KeyMobileSitesPageSet
 
   @classmethod
   def Name(cls):
     return 'blink_style.key_mobile_sites'
 
 
-@benchmark.Disabled('mac', 'reference')  # http://crbug.com/479048
+@benchmark.Enabled('android')
 class BlinkStylePolymer(benchmark.Benchmark):
   """Measures performance of Blink's style engine (CSS Parsing, Style Recalc,
   etc.) for Polymer cases.
   """
   test = blink_style.BlinkStyle
   page_set = page_sets.PolymerPageSet
 
   @classmethod
   def Name(cls):
     return 'blink_style.polymer'