Fix a gpu pixel test for WebGL's commit() API

content/test/gpu/page_sets/pixel_tests.py

 # Copyright 2014 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 telemetry.story import story_set as story_set_module
 
 import sys
 
 from gpu_tests import gpu_test_base
 
@@ skipping 169 matching lines @@
       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_offscreenCanvas_webgl_commit_worker.html',
       name=base_name + '.OffscreenCanvasWebGLRedBoxWorker' + es3_suffix,
       test_rect=[0, 0, 300, 300],
-      revision=1,
+      revision=2,
       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],
       revision=7,
       story_set=self,
@@ skipping 72 matching lines @@
       story_set=self,
       shared_page_state_class=shared_page_state_class,
       expectations=expectations))
 
   @property
   def allow_mixed_story_states(self):
     # Return True here in order to be able to add the same tests with
     # a different SharedPageState on Mac which tests them with the
     # Core Profile rendering path.
     return True