Serializer: correctly deal with internal references.

src/x87/assembler-x87-inl.h

Index: src/x87/assembler-x87-inl.h
diff --git a/src/x87/assembler-x87-inl.h b/src/x87/assembler-x87-inl.h
index 6555ccdd83f3cf384c3a7315be6649a271aa6f96..95cc26e9cbcfb4180e57d0ca5a06293063010f6d 100644
--- a/src/x87/assembler-x87-inl.h
+++ b/src/x87/assembler-x87-inl.h
@@ -155,12 +155,24 @@ void RelocInfo::set_target_object(Object* target,
 }
 
 
-Address RelocInfo::target_reference() {
+Address RelocInfo::target_external_reference() {
   DCHECK(rmode_ == RelocInfo::EXTERNAL_REFERENCE);
   return Memory::Address_at(pc_);
 }
 
 
+Address RelocInfo::target_internal_reference() {
+  DCHECK(rmode_ == INTERNAL_REFERENCE);
+  return Memory::Address_at(pc_);
+}
+
+
+void RelocInfo::set_target_internal_reference(Address target) {
+  DCHECK(rmode_ == INTERNAL_REFERENCE);
+  Memory::Address_at(pc_) = target;
+}
+
+
 Address RelocInfo::target_runtime_entry(Assembler* origin) {
   DCHECK(IsRuntimeEntry(rmode_));
   return reinterpret_cast<Address>(*reinterpret_cast<int32_t*>(pc_));