Move ClearNonLiveReferences and friends into the gc.

src/heap/mark-compact.h

Index: src/heap/mark-compact.h
diff --git a/src/heap/mark-compact.h b/src/heap/mark-compact.h
index 1866c2aa71d706e701a48a25fb047ade8b87c7e9..7ab947ae3b4f5594b877333e42ae682945ef4347 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -811,6 +811,11 @@ class MarkCompactCollector {
   void ClearNonLiveReferences();
   void ClearNonLivePrototypeTransitions(Map* map);
   void ClearNonLiveMapTransitions(Map* map, MarkBit map_mark);
+  void ClearNonLiveMapTransitions(Map* map);

[Michael Starzinger, 2014/08/05 11:47:38]

nit: This actual implementation no longer check whether the transition path is
at a live->non-live hop. Hence I propse
s/ClearNonLiveMapTransitions/ClearMapTransitions/ to make that clearer and also
to avoid confusion with the name overloading here.

[Hannes Payer (out of office), 2014/08/05 11:52:50]

Done.

+  bool ClearMapBackPointer(Map* map);
+  void TrimDescriptorArray(Map* map, DescriptorArray* descriptors,
+                           int number_of_own_descriptors);
+  void TrimEnumCache(Map* map, DescriptorArray* descriptors);
 
   void ClearDependentCode(DependentCode* dependent_code);
   void ClearDependentICList(Object* head);