[runtime] Remove useless IN builtin.

src/full-codegen/x64/full-codegen-x64.cc

Index: src/full-codegen/x64/full-codegen-x64.cc
diff --git a/src/full-codegen/x64/full-codegen-x64.cc b/src/full-codegen/x64/full-codegen-x64.cc
index eda5207026b8fdff1484eb837f9252ace5646311..354b52bcf944516bb44a152a28975cefe79c41f1 100644
--- a/src/full-codegen/x64/full-codegen-x64.cc
+++ b/src/full-codegen/x64/full-codegen-x64.cc
@@ -3235,27 +3235,6 @@ void FullCodeGenerator::EmitIsSmi(CallRuntime* expr) {
 }
 
 
-void FullCodeGenerator::EmitIsNonNegativeSmi(CallRuntime* expr) {
-  ZoneList<Expression*>* args = expr->arguments();
-  DCHECK(args->length() == 1);
-
-  VisitForAccumulatorValue(args->at(0));
-
-  Label materialize_true, materialize_false;
-  Label* if_true = NULL;
-  Label* if_false = NULL;
-  Label* fall_through = NULL;
-  context()->PrepareTest(&materialize_true, &materialize_false,
-                         &if_true, &if_false, &fall_through);
-
-  PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
-  Condition non_negative_smi = masm()->CheckNonNegativeSmi(rax);
-  Split(non_negative_smi, if_true, if_false, fall_through);
-
-  context()->Plug(if_true, if_false);
-}
-
-
 void FullCodeGenerator::EmitIsObject(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);
@@ -5034,7 +5013,7 @@ void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) {
   switch (op) {
     case Token::IN:
       VisitForStackValue(expr->right());
-      __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION);
+      __ CallRuntime(Runtime::kHasProperty, 2);
       PrepareForBailoutBeforeSplit(expr, false, NULL, NULL);
       __ CompareRoot(rax, Heap::kTrueValueRootIndex);
       Split(equal, if_true, if_false, fall_through);