Re-enabling tough_webgl_cases on Mac

tools/perf/benchmarks/smoothness.py

 # Copyright 2013 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 benchmarks import silk_flags
 from benchmarks import webgl_expectations
 from measurements import smoothness
 import page_sets
@@ skipping 33 matching lines @@
   Uses a selection of pages making use of the 2D Canvas API.
   """
   test = smoothness.Smoothness
   page_set = page_sets.ToughCanvasCasesPageSet
 
   @classmethod
   def Name(cls):
     return 'smoothness.tough_canvas_cases'
 
 
-@benchmark.Disabled('android', 'mac')  # crbug.com/373812
+@benchmark.Disabled('android')  # crbug.com/373812
 class SmoothnessToughWebGLCases(benchmark.Benchmark):
   test = smoothness.Smoothness
   page_set = page_sets.ToughWebglCasesPageSet
 
   @classmethod
   def CreateExpectations(cls):
     return webgl_expectations.WebGLExpectations()
 
   @classmethod
   def Name(cls):
@@ skipping 251 matching lines @@
   tag = 'sync_scroll'
   test = smoothness.Smoothness
   page_set = page_sets.PathologicalMobileSitesPageSet
 
   def CustomizeBrowserOptions(self, options):
     silk_flags.CustomizeBrowserOptionsForSyncScrolling(options)
 
   @classmethod
   def Name(cls):
     return 'smoothness.sync_scroll.pathological_mobile_sites'