Unify implementations of Map handles vectors and lists

src/objects.h

 // 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 4424 matching lines @@
   inline int flags();
   inline void set_flags(int flags);
   class GroupField : public BitField<int, 0, 3> {};
   class CountField : public BitField<int, 3, 27> {};
   STATIC_ASSERT(kGroupCount <= GroupField::kMax + 1);
 };
 
 
 class PrototypeInfo;
 
+typedef std::vector<Handle<Map>> MapHandles;
 
 // All heap objects have a Map that describes their structure.
 //  A Map contains information about:
 //  - Size information about the object
 //  - How to iterate over an object (for garbage collection)
 class Map: public HeapObject {
  public:
   // Instance size.
   // Size in bytes or kVariableSizeSentinel if instances do not have
   // a fixed size.
@@ skipping 502 matching lines @@
   Code* LookupInCodeCache(Name* name, Code::Flags code);
 
   static Handle<Map> GetObjectCreateMap(Handle<HeapObject> prototype);
 
   // Computes a hash value for this map, to be used in HashTables and such.
   int Hash();
 
   // Returns the transitioned map for this map with the most generic
   // elements_kind that's found in |candidates|, or |nullptr| if no match is
   // found at all.
-  Map* FindElementsKindTransitionedMap(MapHandleList* candidates);
+  Map* FindElementsKindTransitionedMap(MapHandles const& candidates);
 
   inline bool CanTransition();
 
   inline bool IsBooleanMap();
   inline bool IsPrimitiveMap();
   inline bool IsJSReceiverMap();
   inline bool IsJSObjectMap();
   inline bool IsJSArrayMap();
   inline bool IsJSFunctionMap();
   inline bool IsStringMap();
@@ skipping 5258 matching lines @@
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #include "src/objects/object-macros-undef.h"
 
 #endif  // V8_OBJECTS_H_