Support for latest WebIDL for indexed property getters.

Source/core/dom/ClientRectList.idl

Index: Source/core/dom/ClientRectList.idl
diff --git a/Source/core/dom/ClientRectList.idl b/Source/core/dom/ClientRectList.idl
index de579f5be43c24468003d28dd597a5213537cd46..8017c6b1a39a63ef54551308a565e7cda4d6fc34 100644
--- a/Source/core/dom/ClientRectList.idl
+++ b/Source/core/dom/ClientRectList.idl
@@ -25,11 +25,10 @@
  */
 
 [
-    IndexedGetter,
     ImplementationLacksVTable
 ] interface ClientRectList {
     readonly attribute unsigned long length;
-    ClientRect item([IsIndex,Default=Undefined] optional unsigned long index);
+    getter ClientRect item([IsIndex,Default=Undefined] optional unsigned long index);
     // FIXME: Fix list behavior to allow custom exceptions to be thrown.
 };