Forward manager_number to NullBrowser constructor (#37125)

Testing: No tests, if `test-wpt` broke again then we would notice pretty
quickly.
Fixes: https://github.com/servo/servo/issues/37124

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

tests/wpt/meta/css/css-values/attr-security.html.ini

@@ -38,3 +38,39 @@
 
   [CSS Values and Units Test: attr() security limitations 14]
     expected: FAIL
+
+  ['--x: image-set(attr(data-foo))' with data-foo="https://does-not-exist.test/404.png"]
+    expected: FAIL
+
+  ['--x: src(attr(data-foo))' with data-foo="https://does-not-exist.test/404.png"]
+    expected: FAIL
+
+  ['background-image: src("https://does-not-exist.test/404.png")' with data-foo="https://does-not-exist.test/404.png"]
+    expected: FAIL
+
+  ['--x: src(string("https://does-not-exist.test" attr(data-foo)))' with data-foo="/404.png"]
+    expected: FAIL
+
+  ['background-image: src(string("https://does-not-exist.test/""404.png"))' with data-foo="/404.png"]
+    expected: FAIL
+
+  ['--x: attr(data-foo type(<url>))' with data-foo="url(https://does-not-exist.test/404.png)"]
+    expected: FAIL
+
+  ['--x: image(attr(data-foo))' with data-foo="https://does-not-exist.test/404.png"]
+    expected: FAIL
+
+  ['background-image: image("https://does-not-exist.test/404.png")' with data-foo="https://does-not-exist.test/404.png"]
+    expected: FAIL
+
+  ['background-image: url(https://does-not-exist.test/404.png), attr(data-foo type(<image>))' with data-foo="linear-gradient(#000000, #ffffff)"]
+    expected: FAIL
+
+  ['--x: image-set(var(--y, attr(data-foo)))' with data-foo="https://does-not-exist.test/404.png"]
+    expected: FAIL
+
+  ['--x: image-set(var(--some-string))' with data-foo="https://does-not-exist.test/404.png"]
+    expected: FAIL
+
+  ['--x: image-set(var(--some-string-list))' with data-foo="https://does-not-exist.test/404.png"]
+    expected: FAIL

tests/wpt/meta/css/css-values/ch-unit-019.html.ini

@@ -0,0 +1,2 @@
+[ch-unit-019.html]
+  expected: FAIL

tests/wpt/meta/css/css-values/ident-function-computed.html.ini

@@ -0,0 +1,33 @@
+[ident-function-computed.html]
+  [Property view-transition-name value 'ident(myident)']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident("myident")']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident("myident" 3)']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident(3 "myident")']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident("my" "ident")']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident(my "ident")']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident("my" ident)']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident(my ident)']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident(-- myident)']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident(my 3 3 3 3 ident)']
+    expected: FAIL
+
+  [Property view-transition-name value 'ident("myident" 42)']
+    expected: FAIL

tests/wpt/meta/css/css-values/ident-function-parsing.html.ini

@@ -0,0 +1,39 @@
+[ident-function-parsing.html]
+  [e.style['view-transition-name'\] = "ident(myident)" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident( myident)" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(myident )" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(\\"myident\\")" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(\\"myident\\" 3)" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(3 \\"myident\\")" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(\\"my\\" \\"ident\\")" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(my \\"ident\\")" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(\\"my\\" ident)" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(my ident)" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(-- myident)" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(my 3 3 3 3 ident)" should set the property value]
+    expected: FAIL
+
+  [e.style['view-transition-name'\] = "ident(\\"myident\\" 42)" should set the property value]
+    expected: FAIL

tests/wpt/meta/css/css-values/sign-in-keyframes-with-relative-units.html.ini

@@ -0,0 +1,6 @@
+[sign-in-keyframes-with-relative-units.html]
+  [Initially, the font-size is 8px for #target, so the result is 0.75]
+    expected: FAIL
+
+  [Changing the font-size of #target changes the start point, so the result should be 1.75]
+    expected: FAIL

tests/wpt/meta/css/css-values/tree-counting/sibling-index-keyframe-transform-dynamic.html.ini

@@ -0,0 +1,6 @@
+[sibling-index-keyframe-transform-dynamic.html]
+  [Initially, the sibling-index() is 3 for #target]
+    expected: FAIL
+
+  [Removing a preceding sibling of #target reduces the sibling-index()]
+    expected: FAIL