Unify implementations of Map handles vectors and lists

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

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 #include <utility>
 
 #include "test/cctest/test-api.h"
 
 #include "src/v8.h"
@@ skipping 1750 matching lines @@
   CHECK(!new_map->is_deprecated());
   CHECK(expectations.Check(*new_map));
 
   // Update deprecated |map|, it should become |new_map|.
   Handle<Map> updated_map = Map::Update(map);
   CHECK_EQ(*new_map, *updated_map);
 
   // 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);
   }
 }
 
 // This test ensures that trivial field generalization (from HeapObject to
 // HeapObject) is correctly propagated from one branch of transition tree
 // (|map2|) to another (|map|).
 //
 //   + - p0 - p1 - p2A - p3 - p4: |map|
 //   |
@@ skipping 72 matching lines @@
 
   CHECK(!new_map->is_deprecated());
   CHECK(expectations.Check(*new_map));
 
   Handle<Map> updated_map = Map::Update(map);
   CHECK_EQ(*new_map, *updated_map);
 
   // 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);
   }
 }
 
 TEST(ReconfigureElementsKind_GeneralizeSmiFieldToDouble) {
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());
   Isolate* isolate = CcTest::i_isolate();
   Handle<FieldType> any_type = FieldType::Any(isolate);
 
@@ skipping 855 matching lines @@
   Handle<Object> obj =
       Object::NewStorageFor(isolate, isolate->factory()->uninitialized_value(),
                             Representation::Double());
   CHECK(obj->IsMutableHeapNumber());
   CHECK_EQ(kHoleNanInt64, HeapNumber::cast(*obj)->value_as_bits());
 
   obj = Object::NewStorageFor(isolate, mhn, Representation::Double());
   CHECK(obj->IsMutableHeapNumber());
   CHECK_EQ(kHoleNanInt64, HeapNumber::cast(*obj)->value_as_bits());
 }