Introduce a code stub version of Array.prototype.push

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 "src/assert-scope.h"
@@ skipping 3062 matching lines @@
   // Are two DescriptorArrays equal?
   bool IsEqualTo(DescriptorArray* other);
 #endif
 
   // Returns the fixed array length required to hold number_of_descriptors
   // descriptors.
   static int LengthFor(int number_of_descriptors) {
     return ToKeyIndex(number_of_descriptors);
   }
 
+  static int ToDetailsIndex(int descriptor_number) {
+    return kFirstIndex + (descriptor_number * kDescriptorSize) +
+           kDescriptorDetails;
+  }
+
  private:
   // An entry in a DescriptorArray, represented as an (array, index) pair.
   class Entry {
    public:
     inline explicit Entry(DescriptorArray* descs, int index) :
         descs_(descs), index_(index) { }
 
     inline PropertyType type();
     inline Object* GetCallbackObject();
 
    private:
     DescriptorArray* descs_;
     int index_;
   };
 
   // Conversion from descriptor number to array indices.
   static int ToKeyIndex(int descriptor_number) {
     return kFirstIndex +
            (descriptor_number * kDescriptorSize) +
            kDescriptorKey;
   }
 
-  static int ToDetailsIndex(int descriptor_number) {
-    return kFirstIndex +
-           (descriptor_number * kDescriptorSize) +
-           kDescriptorDetails;
-  }
-
   static int ToValueIndex(int descriptor_number) {
     return kFirstIndex +
            (descriptor_number * kDescriptorSize) +
            kDescriptorValue;
   }
 
   // Transfer a complete descriptor from the src descriptor array to this
   // descriptor array.
   void CopyFrom(int index, DescriptorArray* src);
 
@@ skipping 7776 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_