Desugar async/await to create the resulting Promise upfront

src/ast/ast-value-factory.h

Index: src/ast/ast-value-factory.h
diff --git a/src/ast/ast-value-factory.h b/src/ast/ast-value-factory.h
index 818bcc7dc342dba15c87146c3481fbf589c750a8..ca96e0efc348dfff2bf497a84e3b90616f2804eb 100644
--- a/src/ast/ast-value-factory.h
+++ b/src/ast/ast-value-factory.h
@@ -284,10 +284,12 @@ class AstValue : public ZoneObject {
   F(default, "default")                         \
   F(done, "done")                               \
   F(dot, ".")                                   \
+  F(dot_debug_is_active, ".debug_is_active")    \
   F(dot_for, ".for")                            \
   F(dot_generator, ".generator")                \
   F(dot_generator_object, ".generator_object")  \
   F(dot_iterator, ".iterator")                  \
+  F(dot_promise, ".promise")                    \
   F(dot_result, ".result")                      \
   F(dot_switch_tag, ".switch_tag")              \
   F(dot_catch, ".catch")                        \