Handlify PrepareSlowElementsForSort and JSArrayUpdateLengthFromIndex.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2224 matching lines @@
   static Handle<FixedArray> EnsureWritableFastElements(
       Handle<JSObject> object);
   MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements();
 
   // Collects elements starting at index 0.
   // Undefined values are placed after non-undefined values.
   // Returns the number of non-undefined values.
   static Handle<Object> PrepareElementsForSort(Handle<JSObject> object,
                                                uint32_t limit);
   // As PrepareElementsForSort, but only on objects where elements is
-  // a dictionary, and it will stay a dictionary.
+  // a dictionary, and it will stay a dictionary.  Collates undefined and
+  // unexisting elements below limit from position zero of the elements.
   static Handle<Object> PrepareSlowElementsForSort(Handle<JSObject> object,
                                                    uint32_t limit);
-  MUST_USE_RESULT MaybeObject* PrepareSlowElementsForSort(uint32_t limit);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithCallback(
       Handle<JSObject> object,
       Handle<Object> receiver,
       Handle<Object> structure,
       Handle<Name> name);
 
   MUST_USE_RESULT static MaybeHandle<Object> SetPropertyWithCallback(
       Handle<JSObject> object,
       Handle<Object> structure,
@@ skipping 8006 matching lines @@
   DECL_ACCESSORS(length, Object)
 
   // Overload the length setter to skip write barrier when the length
   // is set to a smi. This matches the set function on FixedArray.
   inline void set_length(Smi* length);
 
   static void JSArrayUpdateLengthFromIndex(Handle<JSArray> array,
                                            uint32_t index,
                                            Handle<Object> value);
 
-  MUST_USE_RESULT MaybeObject* JSArrayUpdateLengthFromIndex(uint32_t index,
-                                                            Object* value);
-
   // Initialize the array with the given capacity. The function may
   // fail due to out-of-memory situations, but only if the requested
   // capacity is non-zero.
   static void Initialize(Handle<JSArray> array, int capacity, int length = 0);
 
   // Initializes the array to a certain length.
   inline bool AllowsSetElementsLength();
   // Can cause GC.
   MUST_USE_RESULT static MaybeHandle<Object> SetElementsLength(
       Handle<JSArray> array,
@@ skipping 769 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_