MapCache simplification. It is now a FixedArray that maps number of properties to a WeakCell with...

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 e48d5a3d2264c051190258d4d67fa7fd7c20caac..cd2c9b68c834be428cc7475823995e7ec420e7ba 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -786,10 +786,6 @@ class MarkCompactCollector {
   // flag on the marking stack.
   void RefillMarkingDeque();
 
-  // After reachable maps have been marked process per context object
-  // literal map caches removing unmarked entries.
-  void ProcessMapCaches();
-
   // Callback function for telling whether the object *p is an unmarked
   // heap object.
   static bool IsUnmarkedHeapObject(Object** p);