Bug 1780964 [wpt PR 35212] - Add cos() function for CSSTrigonometrcFu…

…nctions, a=testonly

Automatic update from web-platform-tests
Add cos() function for CSSTrigonometrcFunctions

According to the CSS Values and Units Module Level 4 [1], the trigonometric function should be parsed and evaluated.

This CL adds cos() function and testcases for cos().

Feature status: [2]
Intent to prototype: [3]

[1] https://www.w3.org/TR/css-values-4/#trig-funcs
[2] https://chromestatus.com/feature/5165381072191488
[3] https://groups.google.com/a/chromium.org/g/blink-dev/c/-c9p-Sq_gWg

Bug: 1190444
Change-Id: Ib445b634f6862ad6f4a4afef5d9b97f33945a530
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3783853
Reviewed-by: Xiaocheng Hu <[email protected]>
Commit-Queue: Seokho Song <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1029641}

--

wpt-commits: 57fdb8bad3473e3f69029e74c93d1a632b132a50
wpt-pr: 35212

testing/web-platform/tests/css/css-values/sin-cos-tan-serialize.html

@@ -29,6 +29,10 @@
     "sin(33.333333grad)"                               :"calc(0.5)",
     "sin(0.08333333turn)"                              :"calc(0.5)",
     "cos(60deg)"                                       :"calc(0.5)",
+    "cos(66.66666666grad)"                             :"calc(0.5)",
+    "cos(1.047197551)"                                 :"calc(0.5)",
+    "cos(1.047197551rad)"                              :"calc(0.5)",
+    "cos(0.16666666666turn)"                           :"calc(0.5)",
     "tan(45deg)"                                       :"calc(1)",
     "tan(45deg)"                                       :"calc(1)",
     "calc(sin(30deg) + cos(60deg) + tan(45deg)"        :"calc(2)",