New GC APIs, try 2.

src/heap-profiler.cc

 // Copyright 2009-2010 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 122 matching lines @@
   if (!obj->IsHeapObject())
     return v8::HeapProfiler::kUnknownObjectId;
   return snapshots_->FindObjectId(HeapObject::cast(*obj)->address());
 }
 
 
 void HeapProfiler::ObjectMoveEvent(Address from, Address to) {
   snapshots_->ObjectMoveEvent(from, to);
 }
 
+void HeapProfiler::SetRetainedObjectInfo(UniqueId id,
+                                         RetainedObjectInfo* info) {
+  // TODO(yurus, marja): Don't route this information through GlobalHandles.
+  heap()->isolate()->global_handles()->SetRetainedObjectInfo(id, info);
+}
 
 } }  // namespace v8::internal