Adding new DOM Level 2 CSS interfaces CSSRuleList and CSSCharsetRule, not part of the build yet.

dom/public/idl/css/CSSCharsetRule.idl

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+interface CSSCharsetRule : CSSRule {
+ /* IID: { 0x19fe78cc, 0x65ff, 0x4b1d, \
+  { 0xa5, 0xd7, 0x9e, 0xa8, 0x96, 0x92, 0xce, 0xc6 } } */
+
+  attribute DOMString        encoding;
+                                        // raises(DOMException) on setting
+};

dom/public/idl/css/CSSRuleList.idl

@@ -0,0 +1,7 @@
+interface CSSRuleList {
+ /* IID: { 0xa6cf90c0, 0x15b3, 0x11d2, \
+  { 0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32 } } */
+
+  readonly attribute unsigned long    length;
+  CSSRule            item(in unsigned long index);
+};