[intrinsics]: Add texture_1d level overloads

Spec changes:
https://github.com/gpuweb/gpuweb/pull/1938
https://github.com/gpuweb/gpuweb/pull/1923

Change-Id: Ib738e15a146d73a75213a17a53e89f98c16b80a4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/58040
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: David Neto <dneto@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
diff --git a/test/intrinsics/gen/textureDimensions/79df87.wgsl.expected.hlsl b/test/intrinsics/gen/textureDimensions/79df87.wgsl.expected.hlsl
new file mode 100644
index 0000000..f5c0aa5
--- /dev/null
+++ b/test/intrinsics/gen/textureDimensions/79df87.wgsl.expected.hlsl
@@ -0,0 +1,28 @@
+Texture1D<uint4> arg_0 : register(t0, space1);
+
+void textureDimensions_79df87() {
+  int2 tint_tmp;
+  arg_0.GetDimensions(0, tint_tmp.x, tint_tmp.y);
+  int res = tint_tmp.x;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+tint_symbol vertex_main() {
+  textureDimensions_79df87();
+  const tint_symbol tint_symbol_1 = {float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  return tint_symbol_1;
+}
+
+void fragment_main() {
+  textureDimensions_79df87();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  textureDimensions_79df87();
+  return;
+}