Several methods moved from JSObject to Map.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index d990dd3335d90f043070d71eedce893ead2d01b3..7d0791290bae786aad30f90f1ebe84b3cf50c533 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2156,14 +2156,6 @@ class JSObject: public JSReceiver {
       StoreFromKeyed store_mode = MAY_BE_STORE_FROM_KEYED,
       ExecutableAccessorInfoHandling handling = DEFAULT_HANDLING);
 
-  static inline Handle<String> ExpectedTransitionKey(Handle<Map> map);
-  static inline Handle<Map> ExpectedTransitionTarget(Handle<Map> map);
-
-  // Try to follow an existing transition to a field with attributes NONE. The
-  // return value indicates whether the transition was successful.
-  static inline Handle<Map> FindTransitionToField(Handle<Map> map,
-                                                  Handle<Name> key);
-
   // Extend the receiver with a single fast property appeared first in the
   // passed map. This also extends the property backing store if necessary.
   static void AllocateStorageForMap(Handle<JSObject> object, Handle<Map> map);
@@ -6244,14 +6236,21 @@ class Map: public HeapObject {
   inline bool HasTransitionArray() const;
   inline bool HasElementsTransition();
   inline Map* elements_transition_map();
-  static Handle<TransitionArray> SetElementsTransitionMap(
-      Handle<Map> map, Handle<Map> transitioned_map);
+
   inline Map* GetTransition(int transition_index);
   inline int SearchTransition(Name* name);
   inline FixedArrayBase* GetInitialElements();
 
   DECL_ACCESSORS(transitions, TransitionArray)
 
+  static inline Handle<String> ExpectedTransitionKey(Handle<Map> map);
+  static inline Handle<Map> ExpectedTransitionTarget(Handle<Map> map);
+
+  // Try to follow an existing transition to a field with attributes NONE. The
+  // return value indicates whether the transition was successful.
+  static inline Handle<Map> FindTransitionToField(Handle<Map> map,
+                                                  Handle<Name> key);
+
   Map* FindRootMap();
   Map* FindFieldOwner(int descriptor);
 
@@ -6259,15 +6258,17 @@ class Map: public HeapObject {
 
   int NumberOfFields();
 
+  // TODO(ishell): candidate with JSObject::MigrateToMap().
   bool InstancesNeedRewriting(Map* target,
                               int target_number_of_fields,
                               int target_inobject,
                               int target_unused);
+  // TODO(ishell): moveit!
   static Handle<Map> GeneralizeAllFieldRepresentations(Handle<Map> map);
-  static Handle<HeapType> GeneralizeFieldType(Handle<HeapType> type1,
-                                              Handle<HeapType> type2,
-                                              Isolate* isolate)
-      V8_WARN_UNUSED_RESULT;
+  MUST_USE_RESULT static Handle<HeapType> GeneralizeFieldType(
+      Handle<HeapType> type1,
+      Handle<HeapType> type2,
+      Isolate* isolate);
   static void GeneralizeFieldType(Handle<Map> map,
                                   int modify_index,
                                   Handle<HeapType> new_field_type);
@@ -6552,7 +6553,6 @@ class Map: public HeapObject {
   // elements_kind that's found in |candidates|, or null handle if no match is
   // found at all.
   Handle<Map> FindTransitionedMap(MapHandleList* candidates);
-  Map* FindTransitionedMap(MapList* candidates);
 
   bool CanTransition() {
     // Only JSObject and subtypes have map transitions and back pointers.
@@ -6714,6 +6714,9 @@ class Map: public HeapObject {
   bool EquivalentToForNormalization(Map* other, PropertyNormalizationMode mode);
 
  private:
+  static Handle<TransitionArray> SetElementsTransitionMap(
+      Handle<Map> map, Handle<Map> transitioned_map);
+
   bool EquivalentToForTransition(Map* other);
   static Handle<Map> RawCopy(Handle<Map> map, int instance_size);
   static Handle<Map> ShareDescriptor(Handle<Map> map,