Suppress WebGL test origin-clean-conformance-offscreeencanvas.html

Mark conformance2/textures/misc/origin-clean-conformance-offscreencanvas.html
as RetryOnFailure.

No-Try: True
Tbr: kbr@chromium.org
Bug: 1082525, 1090201
Change-Id: I9a59e245a6b3cfa765ad43a434b08fbcc8b8eec4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2226085Reviewed-by: Shrek Shao <shrekshao@google.com>
Commit-Queue: Shrek Shao <shrekshao@google.com>
Cr-Commit-Position: refs/heads/master@{#774003}

content/test/gpu/gpu_tests/test_expectations/webgl2_conformance_expectations.txt

@@ -75,6 +75,7 @@ crbug.com/1082525 conformance/more/functions/readPixelsBadArgs.html [ Failure ]
 crbug.com/1082525 conformance/more/functions/texImage2DHTML.html [ RetryOnFailure ]
 crbug.com/1082525 conformance/more/functions/texSubImage2DHTML.html [ RetryOnFailure ]
 crbug.com/1082525 conformance/textures/misc/origin-clean-conformance-offscreencanvas.html [ RetryOnFailure ]
+crbug.com/1082525 conformance2/textures/misc/origin-clean-conformance-offscreencanvas.html [ RetryOnFailure ]
 crbug.com/1083100 conformance/textures/misc/origin-clean-conformance.html [ Skip ]
 crbug.com/1082533 [ mac intel ] conformance/textures/misc/texture-copying-and-deletion.html [ Failure ]
 crbug.com/1082533 [ win vulkan passthrough ] conformance/textures/misc/texture-copying-and-deletion.html [ Failure ]