Merge arguments branch to bleeding edge (second try).

src/codegen.cc

Index: src/codegen.cc
diff --git a/src/codegen.cc b/src/codegen.cc
index ad3cf1bf4cc76b1c9cd2acce5377050f346a0f1f..4e5c781361bacd25cf6ff46b6b3a04a07097ea23 100644
--- a/src/codegen.cc
+++ b/src/codegen.cc
@@ -209,9 +209,14 @@ void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
     case READ_ELEMENT:
       GenerateReadElement(masm);
       break;
-    case NEW_NON_STRICT:
+    case NEW_NON_STRICT_FAST:
+      GenerateNewNonStrictFast(masm);
+      break;
+    case NEW_NON_STRICT_SLOW:
+      GenerateNewNonStrictSlow(masm);
+      break;
     case NEW_STRICT:
-      GenerateNewObject(masm);
+      GenerateNewStrict(masm);
       break;
   }
 }