OilPan related infrastructure on the V8 side.

src/heap-snapshot-generator.cc

Index: src/heap-snapshot-generator.cc
diff --git a/src/heap-snapshot-generator.cc b/src/heap-snapshot-generator.cc
index b77414b32f7286e93a034b279d6eba009b8d466e..9f7777b7f3d9d48cdab4f0cb558f77d778774534 100644
--- a/src/heap-snapshot-generator.cc
+++ b/src/heap-snapshot-generator.cc
@@ -2236,7 +2236,7 @@ void NativeObjectsExplorer::FillRetainedObjects() {
     group->info = NULL;  // Acquire info object ownership.
   }
   isolate->global_handles()->RemoveObjectGroups();
-  isolate->heap()->CallGCEpilogueCallbacks(major_gc_type);
+  isolate->heap()->CallGCEpilogueCallbacks(major_gc_type, kNoGCCallbackFlags);
   // Record objects that are not in ObjectGroups, but have class ID.
   GlobalHandlesExtractor extractor(this);
   isolate->global_handles()->IterateAllRootsWithClassIds(&extractor);