[turbofan] Quit storing strings in types.

test/unittests/compiler/graph-unittest.cc

Index: test/unittests/compiler/graph-unittest.cc
diff --git a/test/unittests/compiler/graph-unittest.cc b/test/unittests/compiler/graph-unittest.cc
index 7fa8bc328d4e390eaeb217bc8a9cea2e3a9cd171..f13dbff2d3b8727e5cb789373fe476db1ad3f1af 100644
--- a/test/unittests/compiler/graph-unittest.cc
+++ b/test/unittests/compiler/graph-unittest.cc
@@ -58,7 +58,7 @@ Node* GraphTest::NumberConstant(volatile double value) {
 
 Node* GraphTest::HeapConstant(const Handle<HeapObject>& value) {
   Node* node = graph()->NewNode(common()->HeapConstant(value));
-  Type* type = Type::HeapConstant(value, zone());
+  Type* type = Type::NewConstant(value, zone());
   NodeProperties::SetType(node, type);
   return node;
 }