[css-view-transitions-1] Refactor skip during cross-doc transition on old Document (#9611)

Author: khushalsagar

css-view-transitions-1/Overview.bs

@@ -949,22 +949,9 @@ urlPrefix: https://wicg.github.io/navigation-api/; type: interface;
 
 		1. Let |document| be [=this's=] [=relevant global object's=] [=associated document=].
 
-		1. If |document|'s [=auto-skip view transitions=] is true, then:
-
-		1. [=Queue a global task=] on the [=DOM manipulation task source=],
-			given |transition|'s [=relevant global object=],
-			to execute the following steps:
-
-			1. [=Call the update callback=] for |transition|.
-
-			1. [=Reject=] |transition|'s [=ViewTransition/ready promise=] with an "{{InvalidStateError}}" {{DOMException}}.
-
-			1. [=Mark as handled=] |transition|'s [=ViewTransition/ready promise=].
-
-			1. [=Resolve=] |transition|'s [=ViewTransition/finished promise=].
-
-			1. Return |transition|.
-
+		1. If |document|'s [=auto-skip view transitions=] is true,
+			then [=skip the view transition=] for |transition| with "{{InvalidStateError}}" {{DOMException}},
+			and return.
 
 		1. If |document|'s [=active view transition=] is not null,
 			then [=skip the view transition|skip that view transition=]
@@ -1051,7 +1038,7 @@ urlPrefix: https://wicg.github.io/navigation-api/; type: interface;
 			Initially a new [=map=].
 
 		: <dfn>phase</dfn>
-		:: One of the following ordered phases:
+		:: One of the following ordered phases, initially "`pending-capture`":
 
 			1. "`pending-capture`".
 			1. "`update-callback-called`".
@@ -1649,16 +1636,15 @@ urlPrefix: https://wicg.github.io/navigation-api/; type: interface;
 
 		1. Let |document| be |transition|'s [=relevant global object's=] [=associated document=].
 
-		1. [=Assert=]: |document|'s [=document/active view transition=] is |transition|.
-
 		1. [=Assert=]: |transition|'s [=ViewTransition/phase=] is not "`done`".
 
 		1. If |transition|'s [=ViewTransition/phase=] is before "`update-callback-called`", then [=queue a global task=] on the [=DOM manipulation task source=],
 			given |transition|'s [=relevant global object=], to [=call the update callback=] of |transition|.
 
 		1. Set [=document/rendering suppression for view transitions=] to false.
 
-		1. [=Clear view transition=] |transition|.
+		1. If |document|'s [=document/active view transition=] is |transition|,
+			[=Clear view transition=] |transition|.
 
 		1. Set |transition|'s [=ViewTransition/phase=] to "`done`".
 
@@ -1948,6 +1934,7 @@ Changes from <a href="https://www.w3.org/TR/2023/WD-css-view-transitions-1-20230
 * Animate back-drop filter similar to transform/size. See <a href="https://github.com/w3c/csswg-drafts/issues/9358">issue 9358</a>.
 * Copy `color-scheme` from DOM element to ''::view-transition-group()''. See <a href="https://github.com/w3c/csswg-drafts/issues/9276">issue 9276</a>.
 * Expose [=auto-skip view transition=] for a {{Document}}, to allow having outbound cross-document transitions preceed programmatic view transiitons. see <a href="https://github.com/w3c/csswg-drafts/issues/9512">issue 9512</a>.
+
 <h3 id="changes-since-2022-05-25">
 Changes from <a href="https://www.w3.org/TR/2023/WD-css-view-transitions-1-20230525/">2022-05-25 Working Draft</a>
 </h3>