Suppress Memory.CSS3D failure on MacBook Pro Retina Display.

content/test/gpu/gpu_tests/memory.py

 # Copyright (c) 2012 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 memory_expectations
+
 from telemetry import test
 from telemetry.page import page_test
 from telemetry.core.timeline import counter
 from telemetry.core.timeline import model
 
 MEMORY_LIMIT_MB = 256
 SINGLE_TAB_LIMIT_MB = 128
 WIGGLE_ROOM_MB = 4
 
 test_harness_script = r"""
@@ skipping 62 matching lines @@
 
   def WillNavigateToPage(self, page, tab):
     custom_categories = ['webkit.console', 'gpu']
     tab.browser.StartTracing(','.join(custom_categories), 60)
 
 class Memory(test.Test):
   """Tests GPU memory limits"""
   test = _MemoryValidator
   page_set = 'page_sets/memory_tests.py'
 
+  def CreateExpectations(self, page_set):
+    return memory_expectations.MemoryExpectations()
+
   def CreatePageSet(self, options):
     page_set = super(Memory, self).CreatePageSet(options)
     for page in page_set.pages:
       page.script_to_evaluate_on_commit = test_harness_script
     return page_set