Pixel_OffscreenCanvasWebGLPaintAfterResize suppression

Pixel_OffscreenCanvasWebGLPaintAfterResize is set to retry on failure on
Nexus 5X.

Bug: chromium:1068620
Change-Id: Ie65b6038eefd13531457b9dacede01b1a934a265
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2139357
Auto-Submit: Behdad Bakhshinategh <behdadb@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757220}

content/test/gpu/gpu_tests/test_expectations/pixel_expectations.txt

@@ -124,6 +124,7 @@ crbug.com/1029389 [ android qualcomm-adreno-(tm)-330 ] Pixel_PrecisionRoundedCor
 
 # Flakes on Nexus 5X.
 crbug.com/883500 [ android-chromium no-use-gl no-use-vulkan qualcomm-adreno-(tm)-418 ] Pixel_BackgroundImage [ RetryOnFailure ]
+crbug.com/1068620 [ android-chromium no-use-gl no-use-vulkan qualcomm-adreno-(tm)-418 ] Pixel_OffscreenCanvasWebGLPaintAfterResize [ RetryOnFailure ]
 
 # We do not have software H.264 decoding on Android, so it can't survive a
 # context loss which results in hardware decoder loss.