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/ptr_ref/load/global/i32.spvasm.expected.glsl

@@ -0,0 +1,20 @@
+#version 310 es
+precision mediump float;
+
+int I = 0;
+
+void main_1() {
+  int x_11 = (I + 1);
+  return;
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  main_1();
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+

test/ptr_ref/load/global/i32.wgsl.expected.glsl

@@ -0,0 +1,15 @@
+#version 310 es
+precision mediump float;
+
+int I = 0;
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  int use = (I + 1);
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+

test/ptr_ref/load/global/struct_field.spvasm.expected.glsl

@@ -0,0 +1,26 @@
+#version 310 es
+precision mediump float;
+
+struct S {
+  int i;
+};
+
+S V = S(0);
+
+void main_1() {
+  int i = 0;
+  int x_15 = V.i;
+  i = x_15;
+  return;
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  main_1();
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+

test/ptr_ref/load/global/struct_field.wgsl.expected.glsl

@@ -0,0 +1,19 @@
+#version 310 es
+precision mediump float;
+
+struct S {
+  int i;
+};
+
+S V = S(0);
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void tint_symbol() {
+  int i = V.i;
+  return;
+}
+void main() {
+  tint_symbol();
+}
+
+