Bug 1859959 [wpt PR 42623] - Rewrite property-cascade.html with getCo…

…mputedStyle(), a=testonly

Automatic update from web-platform-tests
Rewrite property-cascade.html with getComputedStyle() (#42623)

Fixes web-platform-tests/interop#588
--

wpt-commits: 0d569c25cc1d7265e8eb92ead6049600edef4a1b
wpt-pr: 42623

UltraBlame original commit: 356d689d5441d068224f52a979715941a3172c61

testing/web-platform/tests/css/css-properties-values-api/property-cascade.html

@@ -231,23 +231,13 @@
 .
 assert_equals
 (
-inner
-.
-computedStyleMap
+getComputedStyle
 (
+inner
 )
 .
-get
-(
-'
 color
 '
-)
-.
-toString
-(
-)
-'
 rgb
 (
 1
@@ -345,23 +335,13 @@
 .
 assert_equals
 (
-inner
-.
-computedStyleMap
+getComputedStyle
 (
+inner
 )
 .
-get
-(
-'
 color
 '
-)
-.
-toString
-(
-)
-'
 rgb
 (
 3
@@ -499,23 +479,13 @@
 ;
 assert_equals
 (
-element
-.
-computedStyleMap
+getComputedStyle
 (
+element
 )
 .
-get
-(
-'
 color
 '
-)
-.
-toString
-(
-)
-'
 rgb
 (
 4