perf: Disable smoothness.tough_webgl_cases.reference benchmark

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.
 import multiprocessing
 
 from core import perf_benchmark
 
 from benchmarks import silk_flags
 from measurements import smoothness
 import page_sets
@@ skipping 76 matching lines @@
 
   def SetExtraBrowserOptions(self, options):
     options.AppendExtraBrowserArgs('--enable-experimental-canvas-features')
 
   @classmethod
   def Name(cls):
     return 'smoothness.tough_canvas_cases'
 
 
 @benchmark.Disabled('android')  # crbug.com/373812
+@benchmark.Disabled('win-reference')  # crbug.com/612810
 class SmoothnessToughWebGLCases(_Smoothness):
   page_set = page_sets.ToughWebglCasesPageSet
 
   @classmethod
   def Name(cls):
     return 'smoothness.tough_webgl_cases'
 
 
 @benchmark.Enabled('android')
 class SmoothnessMaps(perf_benchmark.PerfBenchmark):
@@ skipping 442 matching lines @@
   """Measures rendering statistics while scrolling advertisements."""
   page_set = page_sets.SyntheticToughWebglAdCasesPageSet
 
   @classmethod
   def Name(cls):
     return 'smoothness.tough_webgl_ad_cases'
 
   @classmethod
   def ShouldDisable(cls, possible_browser):
     return cls.IsSvelte(possible_browser)  # http://crbug.com/574485