Update/enable tests in VertexStateTests

One test has the blocking issue updated to what is currently causing
the failure, and another is passing now, so can be fully enabled.

BUG=tint:114,tint:398

Change-Id: I1735349bdff6f0c36990358b43b17df9c2175970
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/39180
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>

src/tests/end2end/VertexStateTests.cpp

diff --git a/src/tests/end2end/VertexStateTests.cpp b/src/tests/end2end/VertexStateTests.cpp
index 44bf889..72d18ba 100644
--- a/src/tests/end2end/VertexStateTests.cpp
+++ b/src/tests/end2end/VertexStateTests.cpp
@@ -534,7 +534,7 @@
 
 // Test that overlapping vertex attributes are permitted and load data correctly
 TEST_P(VertexStateTest, OverlappingVertexAttributes) {
-    // TODO(crbug.com/tint/398): GLSL builtins don't work with SPIR-V reader.
+    // TODO(crbug.com/tint/114): Tint needs to support 1.4 version of OpSelect
     DAWN_SKIP_TEST_IF(HasToggleEnabled("use_tint_generator"));
 
     utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 3, 3);
@@ -631,9 +631,6 @@
 
 // Test that vertex input is not required in render pipeline descriptor.
 TEST_P(OptionalVertexStateTest, Basic) {
-    // TODO(crbug.com/tint/398): GLSL builtins don't work with SPIR-V reader.
-    DAWN_SKIP_TEST_IF(HasToggleEnabled("use_tint_generator"));
-
     utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 3, 3);
 
     wgpu::ShaderModule vsModule =