Implement WebGL's commit with software compositing

content/test/gpu/gpu_tests/pixel_expectations.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 gpu_tests.gpu_test_expectations import GpuTestExpectations
 
 # See the GpuTestExpectations class for documentation.
 
 class PixelExpectations(GpuTestExpectations):
   def SetExpectations(self):
     # Sample Usage:
     # self.Fail('Pixel_Canvas2DRedBox',
     #     ['mac', 'amd', ('nvidia', 0x1234)], bug=123)
 
     # Software compositing is not supported on Android; so we skip these tests
     # that disables gpu compositing on Android platforms.
     self.Skip('Pixel_OffscreenCanvasUnaccelerated2D', ['android'])
     self.Skip('Pixel_OffscreenCanvasUnaccelerated2DWorker', ['android'])
+    self.Skip('Pixel_OffscreenCanvasWebGLSoftwareCompositing', ['android'])
+    self.Skip('Pixel_OffscreenCanvasWebGLSoftwareCompositingWorker',
+              ['android'])
 
     self.Fail('Pixel_ScissorTestWithPreserveDrawingBuffer',
         ['android'], bug=521588)
 
     self.Fail('Pixel_ScissorTestWithPreserveDrawingBufferES3',
               ['mac'], bug=540039)
     self.Fail('Pixel_WebGLGreenTriangleES3',
               ['mac', ('intel', 0x116)], bug=540531)
 
     # TODO(ccameron) fix these on Mac Retina
     self.Fail('Pixel_CSS3DBlueBox', ['mac'], bug=533690)
     self.Fail('Pixel_CSS3DBlueBoxES3', ['mac'], bug=533690)
 
     # TODO(vmiura) check / generate reference images for Android devices
     self.Fail('Pixel_SolidColorBackground', ['mac', 'android'], bug=624256)
 
     # TODO(erikchen) check / generate reference images.
     self.Fail('Pixel_CSSFilterEffects', ['mac'], bug=581526)
     self.Fail('Pixel_CSSFilterEffects_NoOverlays', ['mac'], bug=581526)
 
     self.Fail('Pixel_OffscreenCanvasUnaccelerated2DGPUCompositingWorker',
               ['mac', ('nvidia', 0xfe9)], bug=652931)
+    self.Fail('Pixel_OffscreenCanvasWebGLSoftwareCompositing', bug=563852)
+    self.Fail('Pixel_OffscreenCanvasWebGLSoftwareCompositingWorker', bug=563858)
 
     # TODO(kbr): flakily timing out on this configuration.
     self.Flaky('*', ['linux', 'intel', 'debug'], bug=648369)