Disable flaky test Pixel.Canvas2DRedBox.

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.page import page as page_module
 from telemetry.page import page_set as page_set_module
 
 
 class PixelTestsPage(page_module.Page):
 
   def __init__(self, url, name, test_rect, revision, page_set):
     super(PixelTestsPage, self).__init__(url=url, page_set=page_set, name=name)
     self.user_agent_type = 'desktop'
     self.test_rect = test_rect
     self.revision = revision
 
   def RunNavigateSteps(self, action_runner):
     super(PixelTestsPage, self).RunNavigateSteps(action_runner)
     action_runner.WaitForJavaScriptCondition(
         'domAutomationController._finished', timeout_in_seconds=30)
 
 
 class PixelTestsPageSet(page_set_module.PageSet):
 
   """ Some basic test cases for GPU. """
 
   def __init__(self):
     super(PixelTestsPageSet, self).__init__(
       user_agent_type='desktop')
-    self.AddUserStory(PixelTestsPage(
-      url='file://../../data/gpu/pixel_canvas2d.html',
-      name='Pixel.Canvas2DRedBox',
-      test_rect=[0, 0, 300, 300],
-      revision=4,
-      page_set=self))
+    # self.AddUserStory(PixelTestsPage(
+    #   url='file://../../data/gpu/pixel_canvas2d.html',
+    #   name='Pixel.Canvas2DRedBox',
+    #   test_rect=[0, 0, 300, 300],
+    #   revision=4,
+    #   page_set=self))
 
     self.AddUserStory(PixelTestsPage(
       url='file://../../data/gpu/pixel_css3d.html',
       name='Pixel.CSS3DBlueBox',
       test_rect=[0, 0, 300, 300],
       revision=12,
       page_set=self))
 
     self.AddUserStory(PixelTestsPage(
       url='file://../../data/gpu/pixel_webgl.html',
       name='Pixel.WebGLGreenTriangle',
       test_rect=[0, 0, 300, 300],
       revision=9,
       page_set=self))