Sync CSS interfaces with the specs

Source/core/css/CSSRule.idl

Index: Source/core/css/CSSRule.idl
diff --git a/Source/core/css/CSSRule.idl b/Source/core/css/CSSRule.idl
index 11ce391caac72f004a71d259504d006bb777bfc5..885f6a93f7d846475440756b558543a7fc1dc8cf 100644
--- a/Source/core/css/CSSRule.idl
+++ b/Source/core/css/CSSRule.idl
@@ -18,13 +18,13 @@
  * Boston, MA 02110-1301, USA.
  */
 
-// Introduced in DOM Level 2:
 // http://dev.w3.org/csswg/cssom/#the-cssrule-interface
+
 [
     DependentLifetime,
     WillBeGarbageCollected,
 ] interface CSSRule {
-    // RuleType
+    // TODO(philipj): UNKNOWN_RULE has been removed from the spec.
     const unsigned short UNKNOWN_RULE = 0;
     const unsigned short STYLE_RULE = 1;
     const unsigned short CHARSET_RULE = 2;
@@ -32,17 +32,29 @@
     const unsigned short MEDIA_RULE = 4;
     const unsigned short FONT_FACE_RULE = 5;
     const unsigned short PAGE_RULE = 6;
+    // TODO(philipj): Implement CSSMarginRule.
+    // const unsigned short MARGIN_RULE = 9;
+    // TODO(philipj): Implement CSSNamespaceRule. crbug.com/389549
+    // const unsigned short NAMESPACE_RULE = 10;
+    readonly attribute unsigned short type;
+    attribute DOMString cssText;
+    readonly attribute CSSRule? parentRule;
+    readonly attribute CSSStyleSheet? parentStyleSheet;
+
+    // CSS Animations
+    // http://dev.w3.org/csswg/css-animations/#interface-cssrule
     const unsigned short KEYFRAMES_RULE = 7;
-    const unsigned short WEBKIT_KEYFRAMES_RULE = 7;
     const unsigned short KEYFRAME_RULE = 8;
-    const unsigned short WEBKIT_KEYFRAME_RULE = 8;
-    const unsigned short SUPPORTS_RULE = 12;
-    [RuntimeEnabled=CSSViewport] const unsigned short VIEWPORT_RULE = 15;
 
-    readonly attribute unsigned short   type;
+    // CSS Conditional Rules
+    // http://dev.w3.org/csswg/css-conditional/#extentions-to-cssrule-interface
+    const unsigned short SUPPORTS_RULE = 12;
 
-             attribute DOMString        cssText;
+    // CSS Device Adaptation
+    // http://dev.w3.org/csswg/css-device-adapt/#css-rule-interface
+    [RuntimeEnabled=CSSViewport] const unsigned short VIEWPORT_RULE = 15;
 
-    readonly attribute CSSStyleSheet    parentStyleSheet;
-    readonly attribute CSSRule          parentRule;
+    // Non-standard APIs
+    const unsigned short WEBKIT_KEYFRAMES_RULE = 7;
+    const unsigned short WEBKIT_KEYFRAME_RULE = 8;
 };