Make sure transitioned arrays efficiently call builtin Array functions

src/lithium.h

Index: src/lithium.h
diff --git a/src/lithium.h b/src/lithium.h
index b605eb97bd3a81565d4f084c74acb99c6573641b..48a533c57ef79b3c316df1c6ba51a21aa9f38249 100644
--- a/src/lithium.h
+++ b/src/lithium.h
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 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:
@@ -523,8 +523,6 @@ class LEnvironment: public ZoneObject {
   LOperand** spilled_double_registers_;
 
   LEnvironment* outer_;
-
-  friend class LCodegen;
 };