Suppress failing shared memory test on GTX 1660 D3D12

BUG=dawn:159

Change-Id: I3aca2019641b0eec2a111e4a59a0d3a927f9c645
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/7560
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

src/tests/end2end/ComputeSharedMemoryTests.cpp

@@ -80,6 +80,9 @@ void ComputeSharedMemoryTests::BasicTest(const char* shader) {
 
 // Basic shared memory test
 TEST_P(ComputeSharedMemoryTests, Basic) {
+    // See https://bugs.chromium.org/p/dawn/issues/detail?id=159
+    DAWN_SKIP_TEST_IF(IsD3D12() && IsNvidia());
+
     BasicTest(R"(
         #version 450
         const uint kTileSize = 4;