Telemetry: Fix exact_matches in telemetry.test_runner.

content/test/gpu/gpu_tests/pixel.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.
 from datetime import datetime
 import glob
 import optparse
 import os
 import re
 
 import cloud_storage_test_base
@@ skipping 130 matching lines @@
     if ref_png:
       return ref_png
 
     print 'Reference image not found. Writing tab contents as reference.'
 
     self._WriteImage(image_path, screenshot)
     return screenshot
 
 class Pixel(cloud_storage_test_base.TestBase):
   test = _PixelValidator
-  page_set = page_sets.PixelTestsPageSet
 
   @classmethod
   def AddTestCommandLineArgs(cls, group):
     super(Pixel, cls).AddTestCommandLineArgs(group)
     group.add_option('--reference-dir',
         help='Overrides the default on-disk location for reference images '
         '(only used for local testing without a cloud storage account)',
         default=default_reference_image_dir)
 
   def CreatePageSet(self, options):
-    page_set = super(Pixel, self).CreatePageSet(options)
+    page_set = page_sets.PixelTestsPageSet()
     for page in page_set.pages:
       page.script_to_evaluate_on_commit = test_harness_script
     return page_set
 
   def CreateExpectations(self, page_set):
     return pixel_expectations.PixelExpectations()