Remove the SetExternalStringDiposeCallback API...

src/api.cc

 // Copyright 2009 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 3674 matching lines @@
 
     NeanderObject listener(i::JSObject::cast(listeners.get(i)));
     i::Handle<i::Proxy> callback_obj(i::Proxy::cast(listener.get(0)));
     if (callback_obj->proxy() == FUNCTION_ADDR(that)) {
       listeners.set(i, i::Heap::undefined_value());
     }
   }
 }
 
 
-void V8::SetExternalStringDiposeCallback(
-    ExternalStringDiposeCallback callback) {
-  if (IsDeadCheck("v8::V8::SetExternalStringDiposeCallback()"))
-    return;
-  i::Heap::SetExternalStringDiposeCallback(callback);
-}
-
-
 void V8::SetCounterFunction(CounterLookupCallback callback) {
   if (IsDeadCheck("v8::V8::SetCounterFunction()")) return;
   i::StatsTable::SetCounterFunction(callback);
 }
 
 void V8::SetCreateHistogramFunction(CreateHistogramCallback callback) {
   if (IsDeadCheck("v8::V8::SetCreateHistogramFunction()")) return;
   i::StatsTable::SetCreateHistogramFunction(callback);
 }
 
@@ skipping 731 matching lines @@
 
 
 char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
   HandleScopeImplementer* thread_local =
       reinterpret_cast<HandleScopeImplementer*>(storage);
   thread_local->IterateThis(v);
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal