Revert of Update pixel test expectation and add new worker tests

content/test/gpu/page_sets/pixel_tests.py

Index: content/test/gpu/page_sets/pixel_tests.py
diff --git a/content/test/gpu/page_sets/pixel_tests.py b/content/test/gpu/page_sets/pixel_tests.py
index e3fa4dcb05bdf8b29f9a4afe07b3ee8578d2c955..5e535da66f5737fe0afb8a164d21e68635c104c9 100644
--- a/content/test/gpu/page_sets/pixel_tests.py
+++ b/content/test/gpu/page_sets/pixel_tests.py
@@ -184,15 +184,6 @@
       expectations=expectations))
 
     self.AddStory(PixelTestsPage(
-      url='file://../../data/gpu/pixel_offscreenCanvas_webgl_commit_worker.html',
-      name=base_name + '.OffscreenCanvasWebGLRedBoxWorker' + es3_suffix,
-      test_rect=[0, 0, 300, 300],
-      revision=1,
-      story_set=self,
-      shared_page_state_class=EnableExperimentalCanvasFeaturesSharedPageState,
-      expectations=expectations))
-
-    self.AddStory(PixelTestsPage(
       url='file://../../data/gpu/pixel_canvas2d.html',
       name=base_name + '.Canvas2DRedBox' + es3_suffix,
       test_rect=[0, 0, 300, 300],