Roll out framework change & update gpu tests to conform to the API changes

content/test/gpu/gpu_tests/pixel_integration_test.py

 # Copyright 2016 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 glob
 import logging
 import os
 import re
 import sys
 
 from gpu_tests import gpu_integration_test
@@ skipping 45 matching lines @@
   # to relaunch it, if a new pixel test requires a different set of
   # arguments.
   _last_launched_browser_args = set()
 
   @classmethod
   def Name(cls):
     """The name by which this test is invoked on the command line."""
     return 'pixel'
 
   @classmethod
-  def setUpClass(cls):
-    super(cls, PixelIntegrationTest).setUpClass()
+  def SetUpProcess(cls):
+    super(cls, PixelIntegrationTest).SetUpProcess()
     cls._original_finder_options = cls._finder_options.Copy()
     cls.CustomizeBrowserArgs([])
     cls.StartBrowser()
     cls.SetStaticServerDirs([test_data_dir])
 
   @classmethod
   def CustomizeBrowserArgs(cls, browser_args):
     if not browser_args:
       browser_args = []
     cls._finder_options = cls._original_finder_options.Copy()
@@ skipping 146 matching lines @@
 
     print ('Reference image not found. Writing tab contents as reference to: ' +
            image_path)
 
     self._WriteImage(image_path, screenshot)
     return screenshot
 
 def load_tests(loader, tests, pattern):
   del loader, tests, pattern  # Unused.
   return gpu_integration_test.LoadAllTestsInModule(sys.modules[__name__])