[perf] Disable page_cycler.typical_25.reference on Mac Yosemite

tools/perf/benchmarks/page_cycler.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 core import perf_benchmark
 
 from measurements import page_cycler
 import page_sets
 from telemetry import benchmark
 
@@ skipping 120 matching lines @@
 
 class PageCyclerTypical25(_PageCycler):
   """Page load time benchmark for a 25 typical web pages.
 
   Designed to represent typical, not highly optimized or highly popular web
   sites. Runs against pages recorded in June, 2014.
   """
   options = {'pageset_repeat': 3}
 
   @classmethod
-  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/616781
+  def ShouldDisable(cls, possible_browser):
+    if possible_browser.browser_type == 'reference':
+      if possible_browser.platform.GetDeviceTypeName() == 'Nexus 5X':
+        return True  # http://crbug.com/597656
+      if possible_browser.platform.GetOSVersionName() == 'yosemite':
+        return True  # http://crbug.com/634337
     if possible_browser.platform.GetDeviceTypeName() == 'AOSP on BullHead':
-      return True
+      return True  # http://crbug.com/616781
     return False
 
   @classmethod
   def Name(cls):
     return 'page_cycler.typical_25'
 
   def CreateStorySet(self, options):
     return page_sets.Typical25PageSet(run_no_page_interactions=True)
 
 
@@ skipping 15 matching lines @@
   set, without running in out-of-process iframes mode.. """
   page_set = page_sets.OopifBasicPageSet
 
   @classmethod
   def Name(cls):
     return 'page_cycler.basic_oopif'
 
   @classmethod
   def ShouldDisable(cls, possible_browser):
     return cls.IsSvelte(possible_browser)  # http://crbug.com/607657