Heap profiler: add a missing link between a function closure and shared function info.

include/v8-profiler.h

 // Copyright 2010 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 178 matching lines @@
 
 /**
  * HeapSnapshotEdge represents a directed connection between heap
  * graph nodes: from retaners to retained nodes.
  */
 class V8EXPORT HeapGraphEdge {
  public:
   enum Type {
     CONTEXT_VARIABLE = 0,  // A variable from a function context.
     ELEMENT = 1,           // An element of an array.
-    PROPERTY = 2           // A named object property.
+    PROPERTY = 2,          // A named object property.
+    INTERNAL = 3           // A link that can't be accessed from JS,
+                           // thus, its name isn't a real property name.
   };
 
   /** Returns edge type (see HeapGraphEdge::Type). */
   Type GetType() const;
 
   /**
    * Returns edge name. This can be a variable name, an element index, or
    * a property name.
    */
   Handle<Value> GetName() const;
@@ skipping 113 matching lines @@
 };
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 
 
 #endif  // V8_V8_PROFILER_H_