Use more precise terms for same-origin

Author: noamr

css-cascade-4/Overview.bs

@@ -296,9 +296,8 @@ Processing Stylesheet Imports</h3>
 			1. Set |importedStylesheet|'s <a spec=cssom>origin-clean flag</a> to
 				|parentStylesheet|'s <a spec=cssom>origin-clean flag</a>.
 
-			1. If |response|'s [=response/url=]'s [=url/origin=] is not the [=same origin=] as
-			    |rule|'s [=relevant settings object=]'s [=environment settings object/origin=],
-				unset |importedStylesheet|'s <a spec=cssom>origin-clean flag</a>.
+			1. If |response| is not [=CORS-same-origin=], unset |importedStylesheet|'s
+				<a spec=cssom>origin-clean flag</a>.
 
 			1. Set |rule|'s {{CSSImportRule/styleSheet}} to |importedStylesheet|.
 	</div>

css-values-4/Overview.bs

@@ -1014,8 +1014,7 @@ URL processing model</h4>
 		1. Let |parsedUrl| be the result of the [=URL parser=] steps with |url| and |base|.
 			If the algorithm returns an error, return.
 
-		1. If |corsMode| is not "cors", or |url| is the [=same origin=] as |environmentSettings|'s
-			[=environment settings object/origin=], set |referrer| to |sheet|'s
+		1. If |corsMode| is "cors", set |referrer| to |sheet|'s
 			<a spec=cssom>location</a>. [[CSSOM]]
 
 		1. Let |req| be a new [=/request=] whose [=request/url=] is |parsedUrl|, whose