Make integer indexed properties ("elements") work for proxies.

src/heap.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2312 matching lines @@
 
   Object* js_string;
   MaybeObject* maybe_js_string = AllocateStringFromAscii(CStrVector(str));
   if (maybe_js_string->ToObject(&js_string)) {
     SetNumberStringCache(number, String::cast(js_string));
   }
   return maybe_js_string;
 }
 
 
+MaybeObject* Heap::Uint32ToString(uint32_t value,
+                                  bool check_number_string_cache) {
+  Object* number;
+  MaybeObject* maybe = NumberFromUint32(value);
+  if (!maybe->To<Object>(&number)) return maybe;
+  return NumberToString(number, check_number_string_cache);
+}
+
+
 Map* Heap::MapForExternalArrayType(ExternalArrayType array_type) {
   return Map::cast(roots_[RootIndexForExternalArrayType(array_type)]);
 }
 
 
 Heap::RootListIndex Heap::RootIndexForExternalArrayType(
     ExternalArrayType array_type) {
   switch (array_type) {
     case kExternalByteArray:
       return kExternalByteArrayMapRootIndex;
@@ skipping 3761 matching lines @@
 }
 
 
 void ExternalStringTable::TearDown() {
   new_space_strings_.Free();
   old_space_strings_.Free();
 }
 
 
 } }  // namespace v8::internal