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

src/profile-generator.h

Index: src/profile-generator.h
diff --git a/src/profile-generator.h b/src/profile-generator.h
index ecac8e28fb24768386b5120f0feb5475f6a30fc7..4e423c8d920640fa7b663cda5225c6ea510b7d1f 100644
--- a/src/profile-generator.h
+++ b/src/profile-generator.h
@@ -431,7 +431,8 @@ class HeapGraphEdge {
   enum Type {
     CONTEXT_VARIABLE = v8::HeapGraphEdge::CONTEXT_VARIABLE,
     ELEMENT = v8::HeapGraphEdge::ELEMENT,
-    PROPERTY = v8::HeapGraphEdge::PROPERTY
+    PROPERTY = v8::HeapGraphEdge::PROPERTY,
+    INTERNAL = v8::HeapGraphEdge::INTERNAL
   };
 
   HeapGraphEdge(Type type, const char* name, HeapEntry* from, HeapEntry* to);
@@ -443,7 +444,7 @@ class HeapGraphEdge {
     return index_;
   }
   const char* name() const {
-    ASSERT(type_ == CONTEXT_VARIABLE || type_ == PROPERTY);
+    ASSERT(type_ == CONTEXT_VARIABLE || type_ == PROPERTY || type_ == INTERNAL);
     return name_;
   }
   HeapEntry* from() const { return from_; }
@@ -533,6 +534,7 @@ class HeapEntry {
   void PaintReachableFromOthers() { painted_ = kPaintReachableFromOthers; }
   void SetClosureReference(const char* name, HeapEntry* entry);
   void SetElementReference(int index, HeapEntry* entry);
+  void SetInternalReference(const char* name, HeapEntry* entry);
   void SetPropertyReference(const char* name, HeapEntry* entry);
   void SetAutoIndexReference(HeapEntry* entry);
 
@@ -542,6 +544,7 @@ class HeapEntry {
   void Print(int max_depth, int indent);
 
  private:
+  void AddEdge(HeapGraphEdge* edge);
   int CalculateTotalSize();
   int CalculateNonSharedTotalSize();
   void FindRetainingPaths(HeapEntry* node, CachedHeapGraphPath* prev_path);
@@ -641,6 +644,8 @@ class HeapSnapshot {
   void SetClosureReference(
       HeapEntry* parent, String* reference_name, Object* child);
   void SetElementReference(HeapEntry* parent, int index, Object* child);
+  void SetInternalReference(
+      HeapEntry* parent, const char* reference_name, Object* child);
   void SetPropertyReference(
       HeapEntry* parent, String* reference_name, Object* child);