tint->dawn: Shuffle source tree in preperation of merging repos

docs/    -> docs/tint/
fuzzers/ -> src/tint/fuzzers/
samples/ -> src/tint/cmd/
src/     -> src/tint/
test/    -> test/tint/

BUG=tint:1418,tint:1433

Change-Id: Id2aa79f989aef3245b80ef4aa37a27ff16cd700b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/80482
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

test/tint/array/assign_to_function_var.wgsl.expected.hlsl

@@ -0,0 +1,69 @@
+[numthreads(1, 1, 1)]
+void unused_entry_point() {
+  return;
+}
+
+struct S {
+  int4 arr[4];
+};
+
+static int4 src_private[4] = (int4[4])0;
+groupshared int4 src_workgroup[4];
+cbuffer cbuffer_src_uniform : register(b0, space0) {
+  uint4 src_uniform[4];
+};
+RWByteAddressBuffer src_storage : register(u1, space0);
+
+typedef int4 ret_arr_ret[4];
+ret_arr_ret ret_arr() {
+  const int4 tint_symbol_5[4] = (int4[4])0;
+  return tint_symbol_5;
+}
+
+S ret_struct_arr() {
+  const S tint_symbol_6 = (S)0;
+  return tint_symbol_6;
+}
+
+typedef int4 tint_symbol_1_ret[4];
+tint_symbol_1_ret tint_symbol_1(uint4 buffer[4], uint offset) {
+  int4 arr_1[4] = (int4[4])0;
+  {
+    [loop] for(uint i = 0u; (i < 4u); i = (i + 1u)) {
+      const uint scalar_offset = ((offset + (i * 16u))) / 4;
+      arr_1[i] = asint(buffer[scalar_offset / 4]);
+    }
+  }
+  return arr_1;
+}
+
+typedef int4 tint_symbol_3_ret[4];
+tint_symbol_3_ret tint_symbol_3(RWByteAddressBuffer buffer, uint offset) {
+  int4 arr_2[4] = (int4[4])0;
+  {
+    [loop] for(uint i_1 = 0u; (i_1 < 4u); i_1 = (i_1 + 1u)) {
+      arr_2[i_1] = asint(buffer.Load4((offset + (i_1 * 16u))));
+    }
+  }
+  return arr_2;
+}
+
+void foo(int4 src_param[4]) {
+  int4 src_function[4] = (int4[4])0;
+  int4 tint_symbol[4] = (int4[4])0;
+  const int4 tint_symbol_7[4] = {int4((1).xxxx), int4((2).xxxx), int4((3).xxxx), int4((3).xxxx)};
+  tint_symbol = tint_symbol_7;
+  tint_symbol = src_param;
+  tint_symbol = ret_arr();
+  const int4 src_let[4] = (int4[4])0;
+  tint_symbol = src_let;
+  tint_symbol = src_function;
+  tint_symbol = src_private;
+  tint_symbol = src_workgroup;
+  tint_symbol = ret_struct_arr().arr;
+  tint_symbol = tint_symbol_1(src_uniform, 0u);
+  tint_symbol = tint_symbol_3(src_storage, 0u);
+  int dst_nested[4][3][2] = (int[4][3][2])0;
+  int src_nested[4][3][2] = (int[4][3][2])0;
+  dst_nested = src_nested;
+}