Sync CSS interfaces with the specs

Source/core/css/CSSPageRule.idl

Index: Source/core/css/CSSPageRule.idl
diff --git a/Source/core/css/CSSPageRule.idl b/Source/core/css/CSSPageRule.idl
index 3c64d3b9c4202273b88704060429ac88d47c9b65..b190419a8bae7d22bc4fb328de890cef21e400be 100644
--- a/Source/core/css/CSSPageRule.idl
+++ b/Source/core/css/CSSPageRule.idl
@@ -18,8 +18,11 @@
  * Boston, MA 02110-1301, USA.
  */
 
-// Introduced in DOM Level 2:
+// http://dev.w3.org/csswg/cssom/#the-csspagerule-interface
+
+// TODO(philipj): CSSPageRule should inherit from CSSGroupingRule.
 interface CSSPageRule : CSSRule {
     attribute DOMString selectorText;
-    readonly attribute CSSStyleDeclaration style;
+    // TODO(philipj): style should have [PutForwards=cssText].
+    [SameObject] readonly attribute CSSStyleDeclaration style;
 };