Further extend TypedArray support in d8:

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 1417 matching lines @@
   PropertyAttributes GetLocalPropertyAttribute(String* name);
 
   // Can cause a GC.
   inline bool HasProperty(String* name);
   inline bool HasLocalProperty(String* name);
   inline bool HasElement(uint32_t index);
 
   // Return the object's prototype (might be Heap::null_value()).
   inline Object* GetPrototype();
 
+  // Return the constructor function (may be Heap::null_value()).
+  inline Object* GetConstructor();
+
   // Set the object's prototype (only JSReceiver and null are allowed).
   MUST_USE_RESULT MaybeObject* SetPrototype(Object* value,
                                             bool skip_hidden_prototypes);
 
   // Retrieves a permanent object identity hash code. The undefined value might
   // be returned in case no hash was created yet and OMIT_CREATION was used.
   inline MUST_USE_RESULT MaybeObject* GetIdentityHash(CreationFlag flag);
 
   // Lookup a property.  If found, the result is valid and has
   // detailed information.
@@ skipping 7344 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_