Heap profiler: consider Function instances separately, similar to Arrays and Objects.

Review URL: http://codereview.chromium.org/209066

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2950 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap-profiler.cc

@@ -67,9 +67,10 @@ JSObjectsCluster Clusterizer::Clusterize(HeapObject* obj, bool fine_grain) {
   if (obj->IsJSObject()) {
     JSObject* js_obj = JSObject::cast(obj);
     String* constructor = JSObject::cast(js_obj)->constructor_name();
-    // Differentiate Object and Array instances.
+    // Differentiate Array, Function, and Object instances.
     if (fine_grain && (constructor == Heap::Object_symbol() ||
-                       constructor == Heap::Array_symbol())) {
+                       constructor == Heap::Array_symbol() ||
+                       constructor == Heap::function_class_symbol())) {
       return JSObjectsCluster(constructor, obj);
     } else {
       return JSObjectsCluster(constructor);