Add more checkVisibility dictinoary properties

Author: vmpstr

cssom-view-1/Overview.bs

@@ -1161,6 +1161,9 @@ dictionary ScrollIntoViewOptions : ScrollOptions {
 dictionary CheckVisibilityOptions {
     boolean checkOpacity = false;
     boolean checkVisibilityCSS = false;
+    boolean contentVisibilityAuto = false;
+    boolean opacityProperty = false;
+    boolean visibilityProperty = false;
 };
 
 partial interface Element {
@@ -1246,15 +1249,25 @@ Note: The {{DOMRect}} object returned by {{Element/getBoundingClientRect()}} is
     1. If an ancestor of |this| in the [=flat tree=]
         has ''content-visibility: hidden'',
         return false.
-    1. If the {{CheckVisibilityOptions/checkOpacity}} dictionary member of |options|
-        is true,
+    1. If either the {{CheckVisibilityOptions/checkOpacity}}
+        or the {{CheckVisibilityOptions/opacityProperty}}
+        dictionary members of |options|
+        are true,
         and |this|, or an ancestor of |this| in the [=flat tree=],
         has a computed 'opacity' value of ''0'',
         return false.
-    1. If the {{CheckVisibilityOptions/checkVisibilityCSS}} dictionary member of |options|
-        is true,
+    1. If either the {{CheckVisibilityOptions/checkVisibilityCSS}}
+        or the {{CheckVisibilityOptions/visibilityProperty}}
+        dictionary members of |options|
+        are true,
         and |this| is <l spec=css-display>[=invisible=]</l>,
         return false.
+    1. If the {{CheckVisibilityOptions/contentVisibilityAuto}} dictionary member of |options|
+        is true
+        and an ancestor of |this| in the [=flat tree=]
+        [=skips its contents=]
+        due to ''content-visibility: auto'',
+        return false.
     1. Return true.
 </div>
 
@@ -1984,6 +1997,7 @@ generally not listed.
 <h3 id='changes-from-2022-07-07' class=no-num>Changes From 07 July 2022</h3>
 * Introduced the {{VisualViewport}} API and related concepts
 * Pinch zoom is now renamed to <a>scale factor</a>
+* Added visibilityProperty, opacityProperty, and contentVisiblityAuto properties for {{Element/checkVisibility()}} method.
 
 <h3 id='changes-from-2022-06-22' class=no-num>Changes From 22 June 2022</h3>
 * Adam Argyle moved the <a event>scrollend</a> event from <a href="https://wicg.github.io/overscroll-scrollend-events/">WICG overscroll-scrollend-events</a> to [[CSSOM-VIEW-1]]