Revert commit 2701 per Erik Corry's request.

test/cctest/test-serialize.cc

Index: test/cctest/test-serialize.cc
===================================================================
--- test/cctest/test-serialize.cc	(revision 2701)
+++ test/cctest/test-serialize.cc	(working copy)
@@ -125,9 +125,9 @@
            encoder.Encode(the_hole_value_location.address()));
   ExternalReference stack_guard_limit_address =
       ExternalReference::address_of_stack_guard_limit();
-  CHECK_EQ(make_code(UNCLASSIFIED, 4),
+  CHECK_EQ(make_code(UNCLASSIFIED, 3),
            encoder.Encode(stack_guard_limit_address.address()));
-  CHECK_EQ(make_code(UNCLASSIFIED, 10),
+  CHECK_EQ(make_code(UNCLASSIFIED, 5),
            encoder.Encode(ExternalReference::debug_break().address()));
   CHECK_EQ(make_code(UNCLASSIFIED, 6),
            encoder.Encode(ExternalReference::new_space_start().address()));
@@ -157,9 +157,9 @@
   CHECK_EQ(ExternalReference::the_hole_value_location().address(),
            decoder.Decode(make_code(UNCLASSIFIED, 2)));
   CHECK_EQ(ExternalReference::address_of_stack_guard_limit().address(),
-           decoder.Decode(make_code(UNCLASSIFIED, 4)));
+           decoder.Decode(make_code(UNCLASSIFIED, 3)));
   CHECK_EQ(ExternalReference::debug_break().address(),
-           decoder.Decode(make_code(UNCLASSIFIED, 10)));
+           decoder.Decode(make_code(UNCLASSIFIED, 5)));
   CHECK_EQ(ExternalReference::new_space_start().address(),
            decoder.Decode(make_code(UNCLASSIFIED, 6)));
 }