Transform functions marked as async

runtime/vm/parser.h

Index: runtime/vm/parser.h
diff --git a/runtime/vm/parser.h b/runtime/vm/parser.h
index fc68254aec44a0cb5b053f3aa471836977264a5e..651852f86d841b5a908af3a3329013828143a446 100644
--- a/runtime/vm/parser.h
+++ b/runtime/vm/parser.h
@@ -363,6 +363,8 @@ class Parser : public ValueObject {
   void ParseTopLevelAccessor(TopLevel* top_level, intptr_t metadata_pos);
   RawArray* EvaluateMetadata();
 
+  intptr_t ParseAsyncSpecifier();
+
   // Support for parsing libraries.
   RawObject* CallLibraryTagHandler(Dart_LibraryTag tag,
                                    intptr_t token_pos,
@@ -463,6 +465,9 @@ class Parser : public ValueObject {
                                  Array* default_parameter_values);
   SequenceNode* ParseFunc(const Function& func,
                           Array* default_parameter_values);
+  SequenceNode* BuildAsyncFuture(SequenceNode* body,
+                                 ParamList* params,
+                                 intptr_t saved_pos);
 
   void ParseNativeFunctionBlock(const ParamList* params, const Function& func);