Add unit test demonstrating array function param bug.

A GLSL function like:
    void fn(int x[1][2][3]) {...}

Will emit SkSL with the array dimensions in reverse order:
    void fn(int x[3][2][1]) {...}

Trying to invoke the function will fail because it expects a reverse-
dimensioned array.

Change-Id: I24431aabd2f6111b5493f63f0a85f9c78514d522
Bug: skia:10924
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/333317
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>

tests/sksl/shared/Functions.sksl

@@ -1,3 +1,7 @@
+float arr(float v[2][3]) {
+    return v[0][0] * v[1][2];
+}
+
 float foo(float v[2]) {
     return v[0] * v[1];
 }
@@ -7,7 +11,10 @@ void bar(inout float x) {
     y[0] = x;
     y[1] = x * 2;
     z = foo(y);
-    x = z;
+    float a[2][3];
+    a[0][0] = 123;
+    a[1][2] = 456;
+    x = z + arr(a);
 }
 
 void main() {

tests/sksl/shared/golden/Functions.glsl

@@ -1,23 +1,4 @@
+### Compilation failed:
 
-out vec4 sk_FragColor;
-void main() {
-    float x = 10.0;
-    {
-        float _1_y[2];
-        float _2_z;
-
-        _1_y[0] = 10.0;
-        _1_y[1] = 20.0;
-        float _3_0_foo;
-        {
-            _3_0_foo = _1_y[0] * _1_y[1];
-        }
-
-        _2_z = _3_0_foo;
-
-        x = _2_z;
-    }
-
-
-    sk_FragColor = vec4(x);
-}
+error: 17: expected 'float[3][2]', but found 'float[2][3]'
+1 error

tests/sksl/shared/golden/Functions.metal

@@ -1,32 +1,4 @@
-#include <metal_stdlib>
-#include <simd/simd.h>
-using namespace metal;
-struct Inputs {
-};
-struct Outputs {
-    float4 sk_FragColor [[color(0)]];
-};
-fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
-    Outputs _outputStruct;
-    thread Outputs* _out = &_outputStruct;
-    float x = 10.0;
-    {
-        float _1_y[2];
-        float _2_z;
+### Compilation failed:
 
-        _1_y[0] = 10.0;
-        _1_y[1] = 20.0;
-        float _3_0_foo;
-        {
-            _3_0_foo = _1_y[0] * _1_y[1];
-        }
-
-        _2_z = _3_0_foo;
-
-        x = _2_z;
-    }
-
-
-    _out->sk_FragColor = float4(x);
-    return *_out;
-}
+error: 17: expected 'float[3][2]', but found 'float[2][3]'
+1 error