[builtins] Introduce DeleteProperty builtin

src/full-codegen/mips64/full-codegen-mips64.cc

Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index 150271e2168911506c37e7292bca3c5317c984de..00d8155c7612865b73c6688b2a9403829a3195c2 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -2260,9 +2260,8 @@ 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(v0);
       } else if (proxy != NULL) {
         Variable* var = proxy->var();
@@ -2274,7 +2273,8 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
           __ LoadGlobalObject(a2);
           __ li(a1, Operand(var->name()));
           __ Push(a2, a1);
-          __ CallRuntime(Runtime::kDeleteProperty_Sloppy);
+          __ Push(Smi::FromInt(SLOPPY));
+          __ CallRuntime(Runtime::kDeleteProperty);
           context()->Plug(v0);
         } else {
           DCHECK(!var->IsLookupSlot());