Unify implementations of Map handles vectors and lists

test/cctest/test-field-type-tracking.cc

Index: test/cctest/test-field-type-tracking.cc
diff --git a/test/cctest/test-field-type-tracking.cc b/test/cctest/test-field-type-tracking.cc
index 0ecf7911bd45e5551ae594dcd7cbc6277e378b5a..03d9c52ed0da9b01b4f240a6f0d09cc86a319ef4 100644
--- a/test/cctest/test-field-type-tracking.cc
+++ b/test/cctest/test-field-type-tracking.cc
@@ -1768,9 +1768,9 @@ static void TestReconfigureElementsKind_GeneralizeField(
   // Ensure Map::FindElementsKindTransitionedMap() is able to find the
   // transitioned map.
   {
-    MapHandleList map_list;
-    map_list.Add(updated_map);
-    Map* transitioned_map = map2->FindElementsKindTransitionedMap(&map_list);
+    MapHandles map_list;
+    map_list.push_back(updated_map);
+    Map* transitioned_map = map2->FindElementsKindTransitionedMap(map_list);
     CHECK_EQ(*updated_map, transitioned_map);
   }
 }
@@ -1863,9 +1863,9 @@ static void TestReconfigureElementsKind_GeneralizeFieldTrivial(
   // Ensure Map::FindElementsKindTransitionedMap() is able to find the
   // transitioned map.
   {
-    MapHandleList map_list;
-    map_list.Add(updated_map);
-    Map* transitioned_map = map2->FindElementsKindTransitionedMap(&map_list);
+    MapHandles map_list;
+    map_list.push_back(updated_map);
+    Map* transitioned_map = map2->FindElementsKindTransitionedMap(map_list);
     CHECK_EQ(*updated_map, transitioned_map);
   }
 }