Revert r20375.

src/heap.h

Index: src/heap.h
diff --git a/src/heap.h b/src/heap.h
index 6792d8dc38cdd80a99a7725e72fc996f46afb5ec..0f586e9284e5554a97911982c4c441dc2e44aaec 100644
--- a/src/heap.h
+++ b/src/heap.h
@@ -376,9 +376,7 @@ namespace internal {
   V(next_string, "next")                                                 \
   V(byte_length_string, "byteLength")                                    \
   V(byte_offset_string, "byteOffset")                                    \
-  V(buffer_string, "buffer")                                             \
-  V(intl_initialized_marker_string, "v8::intl_initialized_marker")       \
-  V(intl_impl_object_string, "v8::intl_object")
+  V(buffer_string, "buffer")
 
 // Forward declarations.
 class GCTracer;