[css-font-loading] When setting FontFace attributes, use the serialized form, just like the constructor does.

Author: tabatkins

css-font-loading/Overview.bs

@@ -112,7 +112,7 @@ The <code>FontFace</code> Interface</h2>
 			On setting, parse the string according to the grammar for the CSS ''@font-face'' rule.
 			If it does not match the grammar,
 			throw a SyntaxError;
-			otherwise, set the attribute to the provided string.
+			otherwise, set the attribute to the serialization of the parsed value.
 
 		<dt><dfn>variant</dfn>, <span attribute-info for=variant></span>
 		<dt><dfn>featureSettings</dfn>, <span attribute-info for=featureSettings></span>
@@ -130,7 +130,7 @@ The <code>FontFace</code> Interface</h2>
 			On setting, parse the string according to the grammar for the CSS ''@font-face'' rule.
 			If it does not match the grammar,
 			throw a SyntaxError;
-			otherwise, set the attribute to the provided string.
+			otherwise, set the attribute to the serialization of the parsed value.
 
 		<dt><dfn>status</dfn>, <span attribute-info for=FontFace/status></span>
 		<dd>

css-font-loading/Overview.html

@@ -248,7 +248,7 @@ <h2 class="heading settled heading" data-level=2 id=fontface-interface><span cla
 <p>On setting, parse the string according to the grammar for the CSS <a class=css data-link-type=maybe href=http://dev.w3.org/csswg/css-fonts-3/#at-font-face-rule title=@font-face>@font-face</a> rule.
 			If it does not match the grammar,
 			throw a SyntaxError;
-			otherwise, set the attribute to the provided string.</p>
+			otherwise, set the attribute to the serialization of the parsed value.</p>
 
 		<dt><dfn class=idl-code data-dfn-for=FontFace data-dfn-type=attribute data-export="" id=dom-fontface-variant>variant<a class=self-link href=#dom-fontface-variant></a></dfn>, <span data-attribute-info="" for=variant> of type <a data-link-type=idl-name title=domstring>DOMString</a></span>
 		<dt><dfn class=idl-code data-dfn-for=FontFace data-dfn-type=attribute data-export="" id=dom-fontface-featuresettings>featureSettings<a class=self-link href=#dom-fontface-featuresettings></a></dfn>, <span data-attribute-info="" for=featureSettings> of type <a data-link-type=idl-name title=domstring>DOMString</a></span>
@@ -266,7 +266,7 @@ <h2 class="heading settled heading" data-level=2 id=fontface-interface><span cla
 <p>On setting, parse the string according to the grammar for the CSS <a class=css data-link-type=maybe href=http://dev.w3.org/csswg/css-fonts-3/#at-font-face-rule title=@font-face>@font-face</a> rule.
 			If it does not match the grammar,
 			throw a SyntaxError;
-			otherwise, set the attribute to the provided string.</p>
+			otherwise, set the attribute to the serialization of the parsed value.</p>
 
 		<dt><dfn class=idl-code data-dfn-for=FontFace data-dfn-type=attribute data-export="" id=dom-fontface-status>status<a class=self-link href=#dom-fontface-status></a></dfn>, <span data-attribute-info="" for=FontFace/status> of type <a data-link-type=idl-name href=#enumdef-fontfaceloadstatus title=fontfaceloadstatus>FontFaceLoadStatus</a>, readonly</span>
 		<dd>