Don't unlink evacuation candidates before sweeping, move them to the end of their list of pages.

src/mark-compact.h

Index: src/mark-compact.h
diff --git a/src/mark-compact.h b/src/mark-compact.h
index 5ac0d4489f779ace346ad44e7b7f02a32253c123..c2566003660e26b0b2e8a80cc6e3fbca67ccbbd8 100644
--- a/src/mark-compact.h
+++ b/src/mark-compact.h
@@ -704,9 +704,6 @@ class MarkCompactCollector {
   void RemoveDeadInvalidatedCode();
   void ProcessInvalidatedCode(ObjectVisitor* visitor);
 
-  void UnlinkEvacuationCandidates();
-  void ReleaseEvacuationCandidates();
-
   void StartSweeperThreads();
 
 #ifdef DEBUG
@@ -895,6 +892,12 @@ class MarkCompactCollector {
 
   void EvacuateNewSpaceAndCandidates();
 
+  void ReleaseEvacuationCandidates();
+
+  // Moves the pages of the evacuation_candidates_ list to the end of their
+  // corresponding space pages list.
+  void MoveEvacuationCandidatesToEndOfPagesList();
+
   void SweepSpace(PagedSpace* space, SweeperType sweeper);
 
   // Finalizes the parallel sweeping phase. Marks all the pages that were