[heap] Internalize kExternalAllocationLimit

src/extensions/statistics-extension.cc

 // Copyright 2012 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.
 
 #include "src/extensions/statistics-extension.h"
 
 #include "src/counters.h"
 #include "src/heap/heap-inl.h"
 #include "src/isolate.h"
 
@@ skipping 117 matching lines @@
       {heap->code_space()->CommittedMemory(), "code_space_commited_bytes"},
       {heap->lo_space()->Size(), "lo_space_live_bytes"},
       {heap->lo_space()->Available(), "lo_space_available_bytes"},
       {heap->lo_space()->CommittedMemory(), "lo_space_commited_bytes"},
   };
 
   for (size_t i = 0; i < arraysize(numbers); i++) {
     AddNumber(args.GetIsolate(), result, numbers[i].number, numbers[i].name);
   }
 
-  AddNumber64(args.GetIsolate(), result,
-              heap->amount_of_external_allocated_memory(),
+  AddNumber64(args.GetIsolate(), result, heap->external_memory(),
               "amount_of_external_allocated_memory");
   args.GetReturnValue().Set(result);
 }
 
 }  // namespace internal
 }  // namespace v8