Revert of heap: make array buffer maps disjoint

src/heap/mark-compact.cc

Index: src/heap/mark-compact.cc
diff --git a/src/heap/mark-compact.cc b/src/heap/mark-compact.cc
index d431aa0dfa082eb791fb87d037e8865edb1f1155..f95b91ac4db80791a7cf2dc9ea408e9369a1286e 100644
--- a/src/heap/mark-compact.cc
+++ b/src/heap/mark-compact.cc
@@ -4431,12 +4431,9 @@
   // buffer entries are already filter out. We can just release the memory.
   heap()->FreeQueuedChunks();
 
+  heap()->FreeDeadArrayBuffers(false);
+
   EvacuateNewSpaceAndCandidates();
-
-  // NOTE: ArrayBuffers must be evacuated first, before freeing them. Otherwise
-  // not yet discovered buffers for scavenge will have all of them, and they
-  // will be erroneously freed.
-  heap()->FreeDeadArrayBuffers(false);
 
   // Clear the marking state of live large objects.
   heap_->lo_space()->ClearMarkingStateOfLiveObjects();