[css-font-loading] Until Anne adds useful language for rejecting with a FooError, be more explicit.

Author: tabatkins

css-font-loading/Overview.bs

@@ -175,14 +175,14 @@ The Constructor</h3>
 			and the members of the <a argument for='FontFace/FontFace()'>descriptors</a> argument,
 			according to the grammars of the corresponding descriptors of the CSS ''@font-face'' rule.
 			If any of them fail to parse correctly,
-			reject <var>font face's</var> <a>[<!---->[FontStatusPromise]]</a> with a SyntaxError exception and abort these steps.
+			reject <var>font face's</var> <a>[<!---->[FontStatusPromise]]</a> with a DOMException named "SyntaxError" and abort these steps.
 			Otherwise, set <var>font face's</var> corresponding attributes to the serialization of the parsed values.
 
 		<li>
 			If the <a>source</a> argument was a <a>DOMString</a>,
 			parse it according to the grammar of the 'src' descriptor of the CSS ''@font-face'' rule.
 			If it fails to parse correctly,
-			reject <var>font face's</var> <a>[<!---->[FontStatusPromise]]</a> with a SyntaxError exception and abort these steps;
+			reject <var>font face's</var> <a>[<!---->[FontStatusPromise]]</a> with a DOMException named "SyntaxError" exception and abort these steps;
 			otherwise, set <var>font face's</var> internal <a>[<!---->[Urls]]</a> slot to the string.
 
 			Note: Note that this means that passing a naked url as the source argument,
@@ -215,7 +215,7 @@ The Constructor</h3>
 
 				<li>
 					Otherwise,
-					reject <var>font face's</var> <a>[<!---->[FontStatusPromise]]</a> with a SyntaxError
+					reject <var>font face's</var> <a>[<!---->[FontStatusPromise]]</a> with a DOMException named "SyntaxError"
 					and set <var>font face's</var> <a for=FontFace>status</a> attribute to "error".
 			</ol>
 	</ol>
@@ -279,7 +279,8 @@ The <code>load()</code> method</h3>
 			<ol>
 				<li>
 					If the attempt to load fails,
-					reject <var>font face's</var> <a>[<!---->[FontStatusPromise]]</a> with a NetworkError
+					reject <var>font face's</var> <a>[<!---->[FontStatusPromise]]</a> with
+					a DOMException whose name is "NetworkError"
 					and set <var>font face's</var> <a for=FontFace>status</a> attribute to "error".
 
 				<li>

css-font-loading/Overview.html

@@ -291,14 +291,14 @@ <h3 class="heading settled heading" data-level=2.1 id=font-face-constructor><spa
 			and the members of the <a class=idl-code data-link-for=FontFace/FontFace() data-link-type=argument href=#dom-fontfacefontface-descriptors title=descriptors>descriptors</a> argument,
 			according to the grammars of the corresponding descriptors of 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 any of them fail to parse correctly,
-			reject <var>font face’s</var> <a data-link-type=idl href=#dom-fontface-fontstatuspromise title=[[fontstatuspromise]]>[[FontStatusPromise]]</a> with a SyntaxError exception and abort these steps.
+			reject <var>font face’s</var> <a data-link-type=idl href=#dom-fontface-fontstatuspromise title=[[fontstatuspromise]]>[[FontStatusPromise]]</a> with a DOMException named "SyntaxError" and abort these steps.
 			Otherwise, set <var>font face’s</var> corresponding attributes to the serialization of the parsed values.
 
 		<li>
 			If the <a data-link-type=idl href=#dom-fontfacefontface-source title=source>source</a> argument was a <a data-link-type=idl title=domstring>DOMString</a>,
 			parse it according to the grammar of the <a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-fonts-3/#descdef-src title=src>src</a> descriptor of 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 fails to parse correctly,
-			reject <var>font face’s</var> <a data-link-type=idl href=#dom-fontface-fontstatuspromise title=[[fontstatuspromise]]>[[FontStatusPromise]]</a> with a SyntaxError exception and abort these steps;
+			reject <var>font face’s</var> <a data-link-type=idl href=#dom-fontface-fontstatuspromise title=[[fontstatuspromise]]>[[FontStatusPromise]]</a> with a DOMException named "SyntaxError" exception and abort these steps;
 			otherwise, set <var>font face’s</var> internal <a data-link-type=idl href=#dom-fontface-urls title=[[urls]]>[[Urls]]</a> slot to the string.
 
 <p class=note>Note: Note that this means that passing a naked url as the source argument,
@@ -331,7 +331,7 @@ <h3 class="heading settled heading" data-level=2.1 id=font-face-constructor><spa
 
 				<li>
 					Otherwise,
-					reject <var>font face’s</var> <a data-link-type=idl href=#dom-fontface-fontstatuspromise title=[[fontstatuspromise]]>[[FontStatusPromise]]</a> with a SyntaxError
+					reject <var>font face’s</var> <a data-link-type=idl href=#dom-fontface-fontstatuspromise title=[[fontstatuspromise]]>[[FontStatusPromise]]</a> with a DOMException named "SyntaxError"
 					and set <var>font face’s</var> <a data-link-for=FontFace data-link-type=idl href=#dom-fontface-status title=status>status</a> attribute to "error".
 			</ol>
 	</ol>
@@ -387,7 +387,8 @@ <h3 class="heading settled heading" data-level=2.2 id=font-face-load><span class
 			<ol>
 				<li>
 					If the attempt to load fails,
-					reject <var>font face’s</var> <a data-link-type=idl href=#dom-fontface-fontstatuspromise title=[[fontstatuspromise]]>[[FontStatusPromise]]</a> with a NetworkError
+					reject <var>font face’s</var> <a data-link-type=idl href=#dom-fontface-fontstatuspromise title=[[fontstatuspromise]]>[[FontStatusPromise]]</a> with
+					a DOMException whose name is "NetworkError"
 					and set <var>font face’s</var> <a data-link-for=FontFace data-link-type=idl href=#dom-fontface-status title=status>status</a> attribute to "error".
 
 				<li>