WebGPUExpectations: Suppress the setViewport and setScissorRect

These tests were written prior to the group agreeing on the exact rules,
disable them until they are updated so Dawn's validation can be updated
to match the upstream WebGPU spec.

Bug: dawn:542
Change-Id: I3c66d46c669a5c9ab61b057d0f049b4a63c073ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2461275
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815209}

third_party/blink/web_tests/WebGPUExpectations

@@ -48,6 +48,10 @@ crbug.com/1083478 [ Linux ] wpt_internal/webgpu/webgpu/web-platform/reftests/can
 crbug.com/1083478 [ Win ] wpt_internal/webgpu/webgpu/web-platform/reftests/canvas_clear.html [ Skip ]
 crbug.com/1083478 [ Win ] wpt_internal/webgpu/webgpu/web-platform/reftests/canvas_complex_bgra8unorm.html [ Skip ]
 
+# These tests were written before the validation rules where settled upon.
+crbug.com/dawn/542 wpt_internal/webgpu/cts.html?q=webgpu:api,validation,setViewport:* [ Failure ]
+crbug.com/dawn/542 wpt_internal/webgpu/cts.html?q=webgpu:api,validation,setScissorRect:* [ Failure ]
+
 #
 # Platform-independent failures
 #