Implicit references are missing in heap profiles

test/cctest/test-mark-compact.cc

 // Copyright 2012 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 255 matching lines @@
   // should be impossible right now.
   HEAP->CollectAllGarbage(Heap::kForceCompactionMask);
   // And now map pointers should be encodable again.
   CHECK(HEAP->map_space()->MapPointersEncodable());
 }
 #endif
 
 static int gc_starts = 0;
 static int gc_ends = 0;
 
-static void GCPrologueCallbackFunc() {
+static void GCPrologueCallbackFunc(v8::GCType type,
+                                   v8::GCCallbackFlags flags) {
   CHECK(gc_starts == gc_ends);
   gc_starts++;
 }
 
 
-static void GCEpilogueCallbackFunc() {
+static void GCEpilogueCallbackFunc(v8::GCType type,
+                                   v8::GCCallbackFlags flags) {
   CHECK(gc_starts == gc_ends + 1);
   gc_ends++;
 }
 
 
 TEST(GCCallback) {
   InitializeVM();
 
-  HEAP->SetGlobalGCPrologueCallback(&GCPrologueCallbackFunc);
-  HEAP->SetGlobalGCEpilogueCallback(&GCEpilogueCallbackFunc);
+  HEAP->AddGCPrologueCallback(&GCPrologueCallbackFunc,
+                              v8::kGCTypeMarkSweepCompact);
+  HEAP->AddGCEpilogueCallback(&GCEpilogueCallbackFunc,
+                              v8::kGCTypeMarkSweepCompact);
 
   // Scavenge does not call GC callback functions.
   HEAP->PerformScavenge();
 
   CHECK_EQ(0, gc_starts);
   CHECK_EQ(gc_ends, gc_starts);
 
   HEAP->CollectGarbage(OLD_POINTER_SPACE);
   CHECK_EQ(1, gc_starts);
   CHECK_EQ(gc_ends, gc_starts);
@@ skipping 250 matching lines @@
       if (v8::internal::Snapshot::IsEnabled()) {
         CHECK_LE(delta, 2600 * 1024);
       } else {
         CHECK_LE(delta, 3000 * 1024);
       }
     }
   }
 }
 
 #endif  // __linux__ and !USE_SIMULATOR