Handlify Object::GetPrototype and (most) callers.

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 1557 matching lines @@
       Handle<Object> object,
       uint32_t index);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetElementWithReceiver(
       Isolate* isolate,
       Handle<Object> object,
       Handle<Object> receiver,
       uint32_t index);
 
   // Return the object's prototype (might be Heap::null_value()).
-  Object* GetPrototype(Isolate* isolate);
   static Handle<Object> GetPrototype(Isolate* isolate, Handle<Object> object);
+
   Map* GetMarkerMap(Isolate* isolate);
 
   // Returns the permanent hash code associated with this object. May return
   // undefined if not yet created.
   Object* GetHash();
 
   // Returns the permanent hash code associated with this object depending on
   // the actual object type. May create and store a hash code if needed and none
   // exists.
   // TODO(rafaelw): Remove isolate parameter when objects.cc is fully
@@ skipping 28 matching lines @@
   // Prints this object without details to a message accumulator.
   void ShortPrint(StringStream* accumulator);
 
   // Casting: This cast is only needed to satisfy macros in objects-inl.h.
   static Object* cast(Object* value) { return value; }
 
   // Layout description.
   static const int kHeaderSize = 0;  // Object does not take up any space.
 
  private:
+  Object* GetPrototype(Isolate* isolate);
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(Object);
 };
 
 
 // Smi represents integer Numbers that can be stored in 31 bits.
 // Smis are immediate which means they are NOT allocated in the heap.
 // The this pointer has the following format: [31 bit signed int] 0
 // For long smis it has the following format:
 //     [32 bit signed int] [31 bits zero padding] 0
 // Smi stands for small integer.
@@ skipping 9419 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_