[turbofan] Add support for named access to Number primitives.

src/compiler/js-native-context-specialization.h

Index: src/compiler/js-native-context-specialization.h
diff --git a/src/compiler/js-native-context-specialization.h b/src/compiler/js-native-context-specialization.h
index a5a6c22456c7db60e451bff3b32a035b53458bd7..f87edca69dbb2e0fc5a26b689d347538d70fddea 100644
--- a/src/compiler/js-native-context-specialization.h
+++ b/src/compiler/js-native-context-specialization.h
@@ -87,6 +87,10 @@ class JSNativeContextSpecialization final : public AdvancedReducer {
   // {receiver_type} up to (and including) the {holder}.
   void AssumePrototypesStable(Type* receiver_type, Handle<JSObject> holder);
 
+  // Assuming that {if_projection} is either IfTrue or IfFalse, adds a hint on
+  // the dominating Branch that {if_projection} is the unlikely (deferred) case.
+  void MarkAsDeferred(Node* if_projection);
+
   Graph* graph() const;
   JSGraph* jsgraph() const { return jsgraph_; }
   Isolate* isolate() const;