Remove failed expectations and update pixel tests

Bug: chromium:817110
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Id2ccbca1f9ddc2f1073fd0532eb06fd335b98f0a
Reviewed-on: https://chromium-review.googlesource.com/956034Reviewed-by: Brandon Jones <bajones@chromium.org>
Commit-Queue: Yuqian Li <liyuqian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541906}

content/test/gpu/gpu_tests/pixel_expectations.py

@@ -109,20 +109,6 @@ class PixelExpectations(GpuTestExpectations):
     self.Fail('Pixel_DirectComposition_Video_VP9', ['win', 'intel'],
         bug=602688)
 
-    # Prepare for Skia's Delta Anti-Aliasing golden images rebaseline
-    self.Fail('Pixel_OffscreenCanvasAccelerated2D',
-              ['mac', 'linux', 'win', 'android', 'chromeos'], bug=817110)
-    self.Fail('Pixel_OffscreenCanvasAccelerated2DWorker',
-              ['mac', 'linux', 'win', 'android', 'chromeos'], bug=817110)
-    self.Fail('Pixel_OffscreenCanvasUnaccelerated2D',
-              ['mac', 'linux', 'win', 'android', 'chromeos'], bug=817110)
-    self.Fail('Pixel_OffscreenCanvasUnaccelerated2DGPUCompositing',
-              ['mac', 'linux', 'win', 'android', 'chromeos'], bug=817110)
-    self.Fail('Pixel_OffscreenCanvasUnaccelerated2DGPUCompositingWorker',
-              ['mac', 'linux', 'win', 'android', 'chromeos'], bug=817110)
-    self.Fail('Pixel_OffscreenCanvasUnaccelerated2DWorker',
-              ['mac', 'linux', 'win', 'android', 'chromeos'], bug=817110)
-
     # TODO(zmo): temporarily suppress these two tests until new
     # reference images with new names are generated.
     self.Fail('Pixel_Canvas2DRedBox_NoGpuProcess',