[heap] Divide available memory upon compaction tasks

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 527800f4d181bec8b8726328bb0aaed86a8adb19..37ee1493ed7b4bd1e08e49a2aeb3e60988c559e2 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -467,6 +467,7 @@ class MarkCompactCollector {
   bool IsSweepingCompleted();
 
   void RefillFreeList(PagedSpace* space);
+  void RefillFreeList(CompactionSpace* space);
 
   // Checks if sweeping is in progress right now on any space.
   bool sweeping_in_progress() { return sweeping_in_progress_; }