Merge pull request #1247 from SimonSapin/cssfontfacerule

[css-fonts] Move CSSFontFaceRule attributes to Level 4

Author: litherum

css-fonts-4/Overview.bs

@@ -2696,6 +2696,31 @@ at least as dark as its predecessor. Only values greater than 0 and less than 10
 	</pre>
 	</div>
 
+<h2 id="object-model">Object Model</h2>
+
+	The contents of <code>@font-face</code> rules can be accessed via
+	the following extensions to the CSS Object Model.
+
+<h3 id="om-fontface">The <code>CSSFontFaceRule</code> interface</h3>
+
+	The <dfn>CSSFontFaceRule</dfn> interface represents a <<@font-face>> rule.
+
+	<pre class="idl">
+	interface CSSFontFaceRule : CSSRule {
+	  attribute DOMString family;
+	  attribute DOMString src;
+	  attribute DOMString style;
+	  attribute DOMString weight;
+	  attribute DOMString stretch;
+	  attribute DOMString unicodeRange;
+	  attribute DOMString variant;
+	  attribute DOMString featureSettings;
+	};</pre>
+
+	The DOM Level 2 Style specification [[DOM-LEVEL-2-STYLE]] defined
+	a different variant of this rule.
+	This definition supercedes that one.
+
 <h2 id="platform-props-to-css" class="no-num">Appendix A: Mapping platform font properties to CSS properties</h2>
 
     Issue: Import from level 3