WIP: Editorial: adjust to fetch refactor (#7355)

See whatwg/fetch#1413

Fetch now reports timing automatically if initiator is passed.

css-values-4/Overview.bs

@@ -1035,16 +1035,14 @@ URL Processing Model</h4>
 			[=request/destination=] is |destination|, [=request/mode=] is |corsMode|,
 			[=request/origin=] is |environmentSettings|'s [=environment settings object/origin=],
 			[=request/credentials mode=] is "same-origin", [=request/use-url-credentials flag=] is
-			set, and whose [=request/referrer=] is |referrer|.
+			set, [=request/client=] is |environmentSettings|, and whose [=request/referrer=] is
+			|referrer|.
 
-		10. Let |controller| be the result of [=/Fetch|fetching=] |req|, with <var ignore>taskDestination</var>
-			set to |global|, and <var ignore>processResponseConsumeBody</var> set to the following steps given
-			[=/response=] |res| and Null, failure or byte stream |byteStream|:
-			1. If |sheet|'s <a spec=cssom>origin-clean flag</a> is set,
-				[=fetch-controller/conclude=] |controller|, with <var ignore>initiatorType</var> set
-				to <code>"css"</code>. [[CSSOM]]
+		10. If |sheet|'s <a spec=cssom>origin-clean flag</a> is set, set |req|'s
+			[=request/initiator=] to "css". [[CSSOM]]
 
-			2. Call |processResponse| with |res| and |byteStream|.
+		11. [=/Fetch|fetching=] |req|, with [=fetch/processresponseconsumebody=] set to
+			|processResponse|.
 
 	</div>