Replace set_map_and_elements by MigrateToMap-based SetMapAndElements

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 83f4f1acd4da81e2f15c9ca3aabbf45c13def383..2f0732f036e06d220fc2baeb22b08e686687bae4 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2189,6 +2189,10 @@ class JSObject: public JSReceiver {
   DECL_ACCESSORS(elements, FixedArrayBase)
   inline void initialize_elements();
   MUST_USE_RESULT inline MaybeObject* ResetElements();
+  static void ResetElements(Handle<JSObject> object);
+  static inline void SetMapAndElements(Handle<JSObject> object,
+                                       Handle<Map> map,
+                                       Handle<FixedArrayBase> elements);
   inline ElementsKind GetElementsKind();
   inline ElementsAccessor* GetElementsAccessor();
   // Returns true if an object has elements of FAST_SMI_ELEMENTS ElementsKind.
@@ -2237,11 +2241,6 @@ class JSObject: public JSReceiver {
   bool HasDictionaryArgumentsElements();
   inline SeededNumberDictionary* element_dictionary();  // Gets slow elements.
 
-  inline void set_map_and_elements(
-      Map* map,
-      FixedArrayBase* value,
-      WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
-
   // Requires: HasFastElements().
   static Handle<FixedArray> EnsureWritableFastElements(
       Handle<JSObject> object);