Revert of Enable IOSurface2DCanvasWebGL and 2DCanvasWebGL pixel tests. (patchset #1 id:1 of https://codereview.chromium.org/1835613002/ )
Revert of Enable IOSurface2DCanvasWebGL and 2DCanvasWebGL pixel tests. (patchset #1 id:1 of https://codereview.chromium.org/1835613002/ )

Reason for revert:
2DCanvasWebGL fails on Android Debug (Nexus 5)
See: https://crbug.com/598510

Original issue's description:
> Enable IOSurface2DCanvasWebGL and 2DCanvasWebGL pixel tests.
>
> The reference images have been made by the bots.
>
> BUG=579664
>
> Committed: https://crrev.com/45912bb3bb66d50b55b7b9ee2e912cbae0b5d089
> Cr-Commit-Position: refs/heads/master@{#383573}

TBR=kbr@chromium.org,erikchen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=579664

Review URL: https://codereview.chromium.org/1836043003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#383656}

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