GLSL: add .expected.glsl files for all tests.

Bug: tint:1301
Change-Id: Id3a591a2fa0dfdb112046d5c57defbae07483e0d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69480
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>

test/var/initialization/function/array.wgsl.expected.glsl

@@ -0,0 +1,13 @@
+#version 310 es
+precision mediump float;
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  int v[3] = int[3](0, 0, 0);
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+

test/var/initialization/function/matrix.wgsl.expected.glsl

@@ -0,0 +1,13 @@
+#version 310 es
+precision mediump float;
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  mat2x3 v = mat2x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+

test/var/initialization/function/scalar.wgsl.expected.glsl

@@ -0,0 +1,13 @@
+#version 310 es
+precision mediump float;
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  int v = 0;
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+

test/var/initialization/function/struct.wgsl.expected.glsl

@@ -0,0 +1,18 @@
+#version 310 es
+precision mediump float;
+
+struct S {
+  int a;
+  float b;
+};
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  S v = S(0, 0.0f);
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+

test/var/initialization/function/vector.wgsl.expected.glsl

@@ -0,0 +1,13 @@
+#version 310 es
+precision mediump float;
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  ivec3 v = ivec3(0, 0, 0);
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+