Clean up native context slots and add new ones.

src/factory.h

 // Copyright 2014 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_FACTORY_H_
 #define V8_FACTORY_H_
 
 #include "src/isolate.h"
 #include "src/messages.h"
 
@@ skipping 533 matching lines @@
   Handle<Code> CopyCode(Handle<Code> code);
 
   Handle<Code> CopyCode(Handle<Code> code, Vector<byte> reloc_info);
 
   // Interface for creating error objects.
 
   Handle<Object> NewError(const char* maker, const char* message,
                           Handle<JSArray> args);
   Handle<String> EmergencyNewError(const char* message, Handle<JSArray> args);
 
-  Handle<Object> NewError(const char* constructor, Handle<String> message);
+  Handle<Object> NewError(Handle<JSFunction> constructor,
+                          Handle<String> message);
 
   Handle<Object> NewInvalidStringLengthError() {
     return NewRangeError(MessageTemplate::kInvalidStringLength);
   }
 
   Handle<Object> NewError(const char* maker,
                           MessageTemplate::Template template_index,
                           Handle<Object> arg0 = Handle<Object>(),
                           Handle<Object> arg1 = Handle<Object>(),
                           Handle<Object> arg2 = Handle<Object>());
@@ skipping 187 matching lines @@
   // Reinitialize a JSProxy into an (empty) JS object of respective type and
   // size, but keeping the original prototype.  The receiver must have at least
   // the size of the new object.  The object is reinitialized and behaves as an
   // object that has been freshly allocated.
   void ReinitializeJSProxy(Handle<JSProxy> proxy, InstanceType type, int size);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_