Remove prototype checks for leaf maps in optimized code.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index e52731886a94926d74d6b75a57d634effb447e66..96b2756a68b8b53a61451c74c7f59ef7408f7aca 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -604,8 +604,8 @@ void Code::VerifyEmbeddedMapsDependency() {
       it.rinfo()->target_object()->IsMap()) {
       Map* map = Map::cast(it.rinfo()->target_object());
       if (map->CanTransition()) {
-        CHECK(map->dependent_codes()->Contains(
-                  DependentCodes::kWeaklyEmbeddedGroup, this));
+        CHECK(map->dependent_code()->Contains(
+                  DependentCode::kWeaklyEmbeddedGroup, this));
       }
     }
   }