[cssom-view] Per WG resolution, isVisible->checkVisibility

Author: tabatkins

cssom-view-1/Overview.bs

@@ -1014,7 +1014,7 @@ dictionary ScrollIntoViewOptions : ScrollOptions {
   ScrollLogicalPosition inline = "nearest";
 };
 
-dictionary IsVisibleOptions {
+dictionary CheckVisibilityOptions {
     boolean checkOpacity = false;
     boolean checkVisibilityCSS = false;
 };
@@ -1023,7 +1023,7 @@ partial interface Element {
   DOMRectList getClientRects();
   [NewObject] DOMRect getBoundingClientRect();
 
-  boolean isVisible(optional IsVisibleOptions options = {});
+  boolean checkVisibility(optional CheckVisibilityOptions options = {});
 
   undefined scrollIntoView(optional (boolean or ScrollIntoViewOptions) arg = {});
   undefined scroll(optional ScrollToOptions options = {});
@@ -1079,15 +1079,15 @@ Note: The {{DOMRect}} object returned by {{Element/getBoundingClientRect()}} is
 </div>
 
 <div algorithm>
-    Note: The {{Element/isVisible()}} method
+    Note: The {{Element/checkVisibility()}} method
     provides a set of simple checks
     for whether an element is potentially "visible".
     It defaults to a very simple and straightforward method
     based on the [=box tree=],
     but allows for several additional checks to be opted into,
     depending on what precise notion of "visibility" is desired.
 
-    The <dfn method for=Element>isVisible(|options|)</dfn> method
+    The <dfn method for=Element>checkVisibility(|options|)</dfn> method
     must run these steps,
     when called on an element |this|:
 
@@ -1096,12 +1096,12 @@ Note: The {{DOMRect}} object returned by {{Element/getBoundingClientRect()}} is
     1. If a [=shadow-including ancestor=] of |this|
         has ''content-visibility: hidden'',
         return false.
-    1. If the {{IsVisibleOptions/checkOpacity}} dictionary member of |options|
+    1. If the {{CheckVisibilityOptions/checkOpacity}} dictionary member of |options|
         is true,
         and |this|, or a [=shadow-including ancestor=] of |this|,
         has a computed 'opacity' value of ''0'',
         return false.
-    1. If the {{IsVisibleOptions/checkVisibilityCSS}} dictionary member of |options|
+    1. If the {{CheckVisibilityOptions/checkVisibilityCSS}} dictionary member of |options|
         is true,
         and |this| is <l spec=css-display>[=invisible=]</l>,
         return false.