Add typ boilerplate to Telemetry-based GPU tests.

content/test/gpu/gpu_tests/pixel_integration_test.py

Index: content/test/gpu/gpu_tests/pixel_integration_test.py
diff --git a/content/test/gpu/gpu_tests/pixel_integration_test.py b/content/test/gpu/gpu_tests/pixel_integration_test.py
index f85b382bc418ddc69e4d318f56f7e6876dbc0da7..e6bcac292336fb9845073f9c32588b30015b922f 100644
--- a/content/test/gpu/gpu_tests/pixel_integration_test.py
+++ b/content/test/gpu/gpu_tests/pixel_integration_test.py
@@ -7,6 +7,7 @@ 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
@@ -226,3 +227,7 @@ class PixelIntegrationTest(
 
     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__])