[builtins] De-duplicate specification of array builtin parameter count

src/builtins/builtins.cc

Index: src/builtins/builtins.cc
diff --git a/src/builtins/builtins.cc b/src/builtins/builtins.cc
index b3cd1c653c880aeb8673d85cdb916b5089d54334..44a6ae68820cbc0881dc17b7198eab45e830aa53 100644
--- a/src/builtins/builtins.cc
+++ b/src/builtins/builtins.cc
@@ -116,6 +116,22 @@ Handle<Code> Builtins::OrdinaryToPrimitive(OrdinaryToPrimitiveHint hint) {
 }
 
 // static
+int Builtins::GetBuiltinParameterCount(Name name) {
+  switch (name) {
+#define TFJ_CASE(Name, ParamCount, ...) \
+  case k##Name: {                       \
+    return ParamCount;                  \
+  }
+    BUILTIN_LIST(IGNORE_BUILTIN, IGNORE_BUILTIN, TFJ_CASE, IGNORE_BUILTIN,
+                 IGNORE_BUILTIN, IGNORE_BUILTIN, IGNORE_BUILTIN, IGNORE_BUILTIN)
+#undef CASE
+    default:
+      UNREACHABLE();
+      return 0;
+  }
+}
+
+// static
 Callable Builtins::CallableFor(Isolate* isolate, Name name) {
   switch (name) {
 #define CASE(Name, ...)                                              \