[builtins] Introduce DeleteProperty builtin

src/full-codegen/arm/full-codegen-arm.cc

Index: src/full-codegen/arm/full-codegen-arm.cc
diff --git a/src/full-codegen/arm/full-codegen-arm.cc b/src/full-codegen/arm/full-codegen-arm.cc
index 7550f3ab094327d8b1d16f436afc82016e91b9c1..8466fa492537559292c167a3f9d0afab63971fdb 100644
--- a/src/full-codegen/arm/full-codegen-arm.cc
+++ b/src/full-codegen/arm/full-codegen-arm.cc
@@ -2241,9 +2241,8 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       if (property != NULL) {
         VisitForStackValue(property->obj());
         VisitForStackValue(property->key());
-        CallRuntimeWithOperands(is_strict(language_mode())
-                                    ? Runtime::kDeleteProperty_Strict
-                                    : Runtime::kDeleteProperty_Sloppy);
+        PushOperand(Smi::FromInt(language_mode()));
+        CallRuntimeWithOperands(Runtime::kDeleteProperty);
         context()->Plug(r0);
       } else if (proxy != NULL) {
         Variable* var = proxy->var();
@@ -2255,7 +2254,8 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
           __ LoadGlobalObject(r2);
           __ mov(r1, Operand(var->name()));
           __ Push(r2, r1);
-          __ CallRuntime(Runtime::kDeleteProperty_Sloppy);
+          __ Push(Smi::FromInt(SLOPPY));
+          __ CallRuntime(Runtime::kDeleteProperty);
           context()->Plug(r0);
         } else {
           DCHECK(!var->IsLookupSlot());