[es2015] Precompute the descriptive string for symbols.

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index 81462055593acb61d6fe66a0740a5a8b51fffacd..bb0eded55baf0ae4332d03189ef6e170748eaee4 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -267,7 +267,9 @@ class V8_EXPORT_PRIVATE Factory final {
 
   // Create a symbol.
   Handle<Symbol> NewSymbol();

[Igor Sheludko, 2017/05/23 07:08:23]

Please move this helper method to the private section of a class or inline it to
avoid confusion.

[Benedikt Meurer, 2017/05/23 08:37:39]

Done.

+  MaybeHandle<Symbol> NewSymbol(Handle<Object> name);
   Handle<Symbol> NewPrivateSymbol();
+  MaybeHandle<Symbol> NewPrivateSymbol(Handle<Object> name);
 
   // Create a promise.
   Handle<JSPromise> NewJSPromise();