Omit types in most WGSL `var` statements.

Bug: None
Change-Id: Id6ed10d98a550d912784b688c5473f67f1889a8c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/54882
Commit-Queue: Ben Clayton <bclayton@google.com>
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
diff --git a/src/tests/end2end/ClipSpaceTests.cpp b/src/tests/end2end/ClipSpaceTests.cpp
index 46160a7..a43190e 100644
--- a/src/tests/end2end/ClipSpaceTests.cpp
+++ b/src/tests/end2end/ClipSpaceTests.cpp
@@ -28,7 +28,7 @@
         pipelineDescriptor.vertex.module = utils::CreateShaderModule(device, R"(
             [[stage(vertex)]]
             fn main([[builtin(vertex_index)]] VertexIndex : u32) -> [[builtin(position)]] vec4<f32> {
-                var pos : array<vec3<f32>, 6> = array<vec3<f32>, 6>(
+                var pos = array<vec3<f32>, 6>(
                     vec3<f32>(-1.0,  1.0, 1.0),
                     vec3<f32>(-1.0, -1.0, 0.5),
                     vec3<f32>( 1.0,  1.0, 0.5),