Rework Pixel.2DCanvasWebGL to be less than 400px wide.

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 56 matching lines @@
         url='file://../../data/gpu/pixel_canvas2d_accelerated.html',
         name=base_name + '.IOSurface2DCanvas',
         test_rect=[0, 0, 400, 400],
         revision=1,
         story_set=self,
         shared_page_state_class=IOSurface2DCanvasSharedPageState,
         expectations=expectations))
       self.AddStory(PixelTestsPage(
         url='file://../../data/gpu/pixel_canvas2d_webgl.html',
         name=base_name + '.IOSurface2DCanvasWebGL',
-        test_rect=[0, 0, 400, 400],
-        revision=1,
+        test_rect=[0, 0, 300, 300],
+        revision=2,
         story_set=self,
         shared_page_state_class=IOSurface2DCanvasSharedPageState,
         expectations=expectations))
 
   def _AddAllPages(self, expectations, base_name, use_es3):
     if use_es3:
       es3_suffix = 'ES3'
       shared_page_state_class = PixelTestsES3SharedPageState
     else:
       es3_suffix = ''
@@ skipping 32 matching lines @@
       test_rect=[0, 0, 300, 300],
       revision=0, # This is not used.
       story_set=self,
       shared_page_state_class=shared_page_state_class,
       expectations=expectations,
       expected_colors='../../data/gpu/pixel_scissor_expectations.json'))
 
     self.AddStory(PixelTestsPage(
       url='file://../../data/gpu/pixel_canvas2d_webgl.html',
       name=base_name + '.2DCanvasWebGL',
-      test_rect=[0, 0, 400, 400],
-      revision=1,
+      test_rect=[0, 0, 300, 300],
+      revision=2,
       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