Change AddElementsToFixedArray to work on FixedArrayBase rather than JSObject

src/objects.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 4619 matching lines @@
     if (!maybe_obj->ToObject(&obj)) return maybe_obj;
   }
   cache->set(EntryToIndex(entry), obj);
   cache->set(EntryToIndex(entry) + 1, code);
   cache->ElementAdded();
   return cache;
 }
 
 
 MaybeObject* FixedArray::AddKeysFromJSArray(JSArray* array) {
-  return array->GetElementsAccessor()->AddJSArrayKeysToFixedArray(array, this);
+  ElementsAccessor* accessor = array->GetElementsAccessor();
+  MaybeObject* maybe_result =
+      accessor->AddElementsToFixedArray(array->elements(), this);
+  FixedArray* result;
+  if (!maybe_result->To<FixedArray>(&result)) return maybe_result;
+#ifdef DEBUG
+  if (FLAG_enable_slow_asserts) {
+    for (int i = 0; i < result->length(); i++) {
+      Object* current = result->get(i);
+      ASSERT(current->IsNumber() || current->IsString());
+    }
+  }
+#endif
+  return result;
 }
 
 
 MaybeObject* FixedArray::UnionOfKeys(FixedArray* other) {
   int len0 = length();
 #ifdef DEBUG
   if (FLAG_enable_slow_asserts) {
     for (int i = 0; i < len0; i++) {
       ASSERT(get(i)->IsString() || get(i)->IsNumber());
     }
@@ skipping 6935 matching lines @@
   if (break_point_objects()->IsUndefined()) return 0;
   // Single break point.
   if (!break_point_objects()->IsFixedArray()) return 1;
   // Multiple break points.
   return FixedArray::cast(break_point_objects())->length();
 }
 #endif
 
 
 } }  // namespace v8::internal