Update CSSRule IDL

Removed vendor-prefixing, added some missing types and ensured
that all were present.

Author: Evan Jacobs

lib/CSSRule.js

@@ -13,20 +13,24 @@ CSSOM.CSSRule = function CSSRule() {
 	this.parentStyleSheet = null;
 };
 
+CSSOM.CSSRule.UNKNOWN_RULE = 0;                 // obsolete
 CSSOM.CSSRule.STYLE_RULE = 1;
+CSSOM.CSSRule.CHARSET_RULE = 2;                 // obsolete
 CSSOM.CSSRule.IMPORT_RULE = 3;
 CSSOM.CSSRule.MEDIA_RULE = 4;
 CSSOM.CSSRule.FONT_FACE_RULE = 5;
 CSSOM.CSSRule.PAGE_RULE = 6;
-CSSOM.CSSRule.WEBKIT_KEYFRAMES_RULE = 8;
-CSSOM.CSSRule.WEBKIT_KEYFRAME_RULE = 9;
+CSSOM.CSSRule.KEYFRAMES_RULE = 7;
+CSSOM.CSSRule.KEYFRAME_RULE = 8;
+CSSOM.CSSRule.MARGIN_RULE = 9;
+CSSOM.CSSRule.NAMESPACE_RULE = 10;
+CSSOM.CSSRule.COUNTER_STYLE_RULE = 11;
+CSSOM.CSSRule.SUPPORTS_RULE = 12;
+CSSOM.CSSRule.DOCUMENT_RULE = 13;
+CSSOM.CSSRule.FONT_FEATURE_VALUES_RULE = 14;
+CSSOM.CSSRule.VIEWPORT_RULE = 15;
+CSSOM.CSSRule.REGION_STYLE_RULE = 16;
 
-// Obsolete in CSSOM http://dev.w3.org/csswg/cssom/
-//CSSOM.CSSRule.UNKNOWN_RULE = 0;
-//CSSOM.CSSRule.CHARSET_RULE = 2;
-
-// Never implemented
-//CSSOM.CSSRule.VARIABLES_RULE = 7;
 
 CSSOM.CSSRule.prototype = {
 	constructor: CSSOM.CSSRule