Add typ boilerplate to Telemetry-based GPU tests.

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
 from gpu_tests import cloud_storage_integration_test_base
 from gpu_tests import pixel_expectations
 from gpu_tests import pixel_test_pages
 
 from py_utils import cloud_storage
 from telemetry.util import image_util
 
 
 test_data_dir = os.path.abspath(os.path.join(
     os.path.dirname(__file__), '..', '..', 'data', 'gpu'))
@@ skipping 200 matching lines @@
       ref_png = None
 
     if ref_png is not None:
       return ref_png
 
     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__])