Suppress WebGL test.

conformance/textures/misc/texture-complete.html
flaky on Win7 NVIDIA passthrough Vulkan.

TBR=kbr

Bug: 1020295
Change-Id: Ib4e0a8437e0238291eb1ca4ea97d59e1d013a4aa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1894176Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711433}

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

@@ -266,6 +266,7 @@ crbug.com/angleproject/2722 [ win nvidia vulkan passthrough ] conformance/render
 crbug.com/angleproject/2939 [ win nvidia vulkan passthrough ] conformance/rendering/gl-scissor-fbo-test.html [ RetryOnFailure ]
 crbug.com/963223 [ win nvidia vulkan passthrough ] conformance/rendering/out-of-bounds-array-buffers.html [ Failure ]
 crbug.com/angleproject/2722 [ win nvidia vulkan passthrough ] conformance/textures/misc/texture-attachment-formats.html [ Failure ]
+crbug.com/1020295 [ win7 nvidia vulkan passthrough ] conformance/textures/misc/texture-complete.html [ RetryOnFailure ]
 crbug.com/angleproject/2915 [ win nvidia vulkan passthrough ] conformance/textures/misc/texture-size.html [ Failure ]
 crbug.com/angleproject/2930 [ win nvidia vulkan passthrough ] conformance/textures/misc/texture-size-cube-maps.html [ Failure ]
 crbug.com/angleproject/3481 [ win nvidia vulkan passthrough ] conformance/textures/misc/texture-sub-image-cube-maps.html [ Failure ]