Deoptimization fix for HPushArgument.

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index b9d53be94e210e6b5faabf1d2918d8324ef67cc2..cab7163548fae3b528cc7ac37f26a8daa8c36e00 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -2214,11 +2214,6 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
                        HBasicBlock* true_block,
                        HBasicBlock* false_block);
 
-  // Visit an argument subexpression and emit a push to the outgoing arguments.
-  void VisitArgument(Expression* expr);
-
-  void VisitArgumentList(ZoneList<Expression*>* arguments);
-
   // Visit a list of expressions from left to right, each in a value context.
   void VisitExpressions(ZoneList<Expression*>* exprs);