Disable smoothnes.top_25_smooth on Win reference

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 31 matching lines @@
 
   http://www.chromium.org/developers/design-documents/rendering-benchmarks
   """
   page_set = page_sets.Top25SmoothPageSet
 
   @classmethod
   def Name(cls):
     return 'smoothness.top_25_smooth'
 
   @classmethod
-  def ShouldDisable(cls, possible_browser):  # http://crbug.com/597656
-      return (possible_browser.browser_type == 'reference' and
-              possible_browser.platform.GetDeviceTypeName() == 'Nexus 5X')
+  def ShouldDisable(cls, possible_browser):
+    # http://crbug.com/597656
+    if (possible_browser.browser_type == 'reference' and
+        possible_browser.platform.GetDeviceTypeName() == 'Nexus 5X'):
+      return True
+    # http://crbug.com/650762
+    if (possible_browser.browser_type == 'reference' and
+        possible_browser.platform.GetOSName() == 'win'):
+      return True
+    return False
 
 
 class SmoothnessToughFiltersCases(_Smoothness):
   """Measures frame rate and a variety of other statistics.
 
   Uses a selection of pages making use of SVG and CSS Filter Effects.
   """
   page_set = page_sets.ToughFiltersCasesPageSet
 
   @classmethod
@@ skipping 421 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