Roll IDLs forward.

third_party/WebCore/bindings/scripts/test/TestObj.idl

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary formstrArg, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 243 matching lines @@
     const unsigned short CONST_VALUE_4 = 4;
     const unsigned short CONST_VALUE_8 = 8;
     const short CONST_VALUE_9 = -1;
     const DOMString CONST_VALUE_10 = "my constant string";
     const unsigned short CONST_VALUE_11 = 0xffffffff;
     const unsigned short CONST_VALUE_12 = 0x01;
     const unsigned short CONST_VALUE_13 = 0X20;
     const unsigned short CONST_VALUE_14 = 0x1abc;
     [Reflect=CONST_IMPL] const unsigned short CONST_JAVASCRIPT = 15;
 
-    [Replaceable] attribute long replaceableAttribute;
+    [Replaceable] readonly attribute long replaceableAttribute;
 
     void variadicStringMethod(in DOMString head, in DOMString... tail);
     void variadicDoubleMethod(in double head, in double... tail);
     void variadicNodeMethod(in Node head, in Node... tail);
 };