[perf] Disable memory.blink_memory_mobile.reference on Nexus 5X

tools/perf/benchmarks/memory_infra.py

 # Copyright 2015 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 re
 
 from core import perf_benchmark
 
 from telemetry import benchmark
 from telemetry.timeline import chrome_trace_category_filter
@@ skipping 147 matching lines @@
 
   @classmethod
   def Name(cls):
     return 'memory.blink_memory_mobile'
 
   @classmethod
   def ValueCanBeAddedPredicate(cls, value, is_first_result):
     return (not _IGNORED_STATS_RE.search(value.name) and
             'renderer_processes' in value.name)
 
+  @classmethod
+  def ShouldDisable(cls, possible_browser):
+    # http://crbug.com/634319
+    return (possible_browser.browser_type == 'reference' and
+            possible_browser.platform.GetDeviceTypeName() == 'Nexus 5X')
+
 
 class _MemoryV8Benchmark(_MemoryInfra):
 
   # Report only V8-specific and overall renderer memory values. Note that
   # detailed values reported by the OS (such as native heap) are excluded.
   _V8_AND_OVERALL_MEMORY_RE = re.compile(
       r'renderer_processes:'
       r'(reported_by_chrome:v8|reported_by_os:system_memory:[^:]+$)')
 
   def CreateTimelineBasedMeasurementOptions(self):
@@ skipping 38 matching lines @@
   of long running idle Gmail page """
   page_set = page_sets.LongRunningIdleGmailBackgroundPageSet
 
   @classmethod
   def Name(cls):
     return 'memory.long_running_idle_gmail_background_tbmv2'
 
   @classmethod
   def ShouldDisable(cls, possible_browser):  # http://crbug.com/616530
     return cls.IsSvelte(possible_browser)