Fixes test cases to allow unit cancellation in calc() to produce numb…

…er values (#47897)

Updates test cases that assume that `calc(1px / 1px)` does not produce a number value.

See discussions in w3c/csswg-drafts#10733 and w3c/csswg-drafts#10752.

css/css-properties-values-api/register-property-syntax-parsing.html

@@ -47,6 +47,7 @@
 assert_valid("<length>", "10px /*:)*/");
 assert_valid("<length>", " calc(-2px)");
 assert_valid("<length>", "calc(2px*4 + 10px)");
+assert_valid("<length>", "calc(5px * 3px / 6px)");
 assert_valid("<length>", "7.1e-4cm");
 assert_valid("<length>", "calc(7in - 12px)");
 assert_valid("<length>", "calc(15px + (sign(100vh - 10px) * 5px))");
@@ -255,7 +256,6 @@
 assert_invalid("<length>", "10");
 assert_invalid("<length>", "10%");
 assert_invalid("<length>", "calc(5px + 10%)");
-assert_invalid("<length>", "calc(5px * 3px / 6px)");
 assert_invalid("<length>", "10em");
 assert_invalid("<length>", "calc(4px + 3em)");
 assert_invalid("<length>", "calc(4px + calc(8 * 2em))");

css/css-typed-om/stylevalue-subclasses/cssScale.tentative.html

@@ -11,7 +11,6 @@
 const gInvalidCoordTestCases = [
   { coord: CSS.deg(1), desc: 'an angle CSSUnitValue'},
   { coord: new CSSMathSum(CSS.px(1)), desc: 'a CSSMathValue that doesn\'t match <number>'},
-  { coord: new CSSMathProduct(CSS.px(1), new CSSMathInvert(CSS.px(1))), desc: 'an invalid division by px/px'},
 ];
 
 for (const {coord, desc} of gInvalidCoordTestCases) {
@@ -58,6 +57,13 @@
   assert_false(result.is2D);
 }, 'CSSScale can be constructed from CSSMathValue coordinates');
 
+test(() => {
+  const result = new CSSScale(new CSSMathProduct(CSS.px(1), new CSSMathInvert(CSS.px(1))), 3.14);
+  assert_style_value_equals(result.x, new CSSMathProduct(CSS.px(1), new CSSMathInvert(CSS.px(1))));
+  assert_style_value_equals(result.y, CSS.number(3.14));
+  assert_style_value_equals(result.z, CSS.number(1));
+}, 'CSSScale can be constructed from unit canceling length value coordinates');
+
 for (const attr of ['x', 'y', 'z']) {
   test(() => {
     let result = new CSSScale(0, 0, 0);