Disable v8.detached_context_age_in_gc on Android Nexus 9 Perf bot

tools/perf/benchmarks/v8.py

 # Copyright 2014 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 os
 
 from core import path_util
 from core import perf_benchmark
 from page_sets import google_pages
 
 from benchmarks import v8_helper
@@ skipping 58 matching lines @@
   """Measures the number of GCs needed to collect a detached context.
 
   http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
   test = v8_detached_context_age_in_gc.V8DetachedContextAgeInGC
   page_set = page_sets.PageReloadCasesPageSet
 
   @classmethod
   def Name(cls):
     return 'v8.detached_context_age_in_gc'
 
+  @classmethod
+  def ShouldDisable(cls, possible_browser):
+    # http://crbug.com/685350
+    if possible_browser.platform.GetDeviceTypeName() == 'Nexus 9':
+      return True
+    return False
+
 
 class _InfiniteScrollBenchmark(perf_benchmark.PerfBenchmark):
   """ Base class for infinite scroll benchmarks.
   """
 
   def SetExtraBrowserOptions(self, options):
     options.AppendExtraBrowserArgs([
         # Disable push notifications for Facebook.
         '--disable-notifications',
     ])
@@ skipping 234 matching lines @@
   Designed to represent a mix between top websites and a set of pages that
   have unique V8 characteristics.
   """
 
   @classmethod
   def Name(cls):
     return 'v8.runtime_stats.top_25'
 
   def CreateStorySet(self, options):
     return page_sets.V8Top25StorySet()