[json] support replacer function in BasicJsonStringifier.

src/runtime/runtime-json.cc

Index: src/runtime/runtime-json.cc
diff --git a/src/runtime/runtime-json.cc b/src/runtime/runtime-json.cc
index 9b665e334aba6e7ec6370611b3123d2494318640..2280d85ce26336769d4e4000daf88c095e1dc70c 100644
--- a/src/runtime/runtime-json.cc
+++ b/src/runtime/runtime-json.cc
@@ -14,24 +14,6 @@
 namespace v8 {
 namespace internal {
 
-RUNTIME_FUNCTION(Runtime_QuoteJSONString) {
-  HandleScope scope(isolate);
-  CONVERT_ARG_HANDLE_CHECKED(String, string, 0);
-  DCHECK(args.length() == 1);
-  RETURN_RESULT_OR_FAILURE(
-      isolate, BasicJsonStringifier::StringifyString(isolate, string));
-}
-
-RUNTIME_FUNCTION(Runtime_BasicJSONStringify) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 3);
-  CONVERT_ARG_HANDLE_CHECKED(Object, object, 0);
-  CONVERT_ARG_HANDLE_CHECKED(Object, replacer, 1);
-  CONVERT_ARG_HANDLE_CHECKED(Object, gap, 2);
-  RETURN_RESULT_OR_FAILURE(
-      isolate, BasicJsonStringifier(isolate).Stringify(object, replacer, gap));
-}
-
 RUNTIME_FUNCTION(Runtime_ParseJson) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());