Update PrimitiveTopologyTests to use WGSL

A rebased fork of https://dawn-review.googlesource.com/c/dawn/+/33774

Bug: dawn:572
Change-Id: Icb24ac5b62984e9b093e61077155b9a1eafb344b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/35801
Commit-Queue: Ben Clayton <bclayton@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/tests/end2end/PrimitiveTopologyTests.cpp b/src/tests/end2end/PrimitiveTopologyTests.cpp
index be3e9e9..b103aab 100644
--- a/src/tests/end2end/PrimitiveTopologyTests.cpp
+++ b/src/tests/end2end/PrimitiveTopologyTests.cpp
@@ -151,9 +151,6 @@
     void SetUp() override {
         DawnTest::SetUp();
 
-        // TODO(crbug.com/tint/398): GLSL builtins don't work with SPIR-V reader.
-        DAWN_SKIP_TEST_IF(HasToggleEnabled("use_tint_generator"));
-
         renderPass = utils::CreateBasicRenderPass(device, kRTSize, kRTSize);
 
         vsModule = utils::CreateShaderModuleFromWGSL(device, R"(