Remove prototype checks for leaf maps in optimized code.

src/mark-compact.h

Index: src/mark-compact.h
diff --git a/src/mark-compact.h b/src/mark-compact.h
index 2613a3e13516ec726a207280b3970fd0b5f1d9fb..4e44650b8e89c19a11442d7d7074b43c58f55850 100644
--- a/src/mark-compact.h
+++ b/src/mark-compact.h
@@ -830,8 +830,8 @@ class MarkCompactCollector {
   void ClearNonLivePrototypeTransitions(Map* map);
   void ClearNonLiveMapTransitions(Map* map, MarkBit map_mark);
 
-  void ClearAndDeoptimizeDependentCodes(Map* map);
-  void ClearNonLiveDependentCodes(Map* map);
+  void ClearAndDeoptimizeDependentCode(Map* map);
+  void ClearNonLiveDependentCode(Map* map);
 
   // Marking detaches initial maps from SharedFunctionInfo objects
   // to make this reference weak. We need to reattach initial maps