[VM generic functions] Support generic async calls.

runtime/vm/ast_transformer.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 
 #include "vm/ast_transformer.h"
 
 #include "vm/object_store.h"
 #include "vm/parser.h"
@@ skipping 300 matching lines @@
   AstNode* new_false_result = Transform(node->false_expr());
   preamble_ = saved_preamble;
   IfNode* new_if =
       new (Z) IfNode(ST(node->token_pos()), new_condition, new_true, new_false);
   preamble_->Add(new_if);
   result_ = MakeName(new (Z) ConditionalExprNode(
       ST(node->token_pos()), new_condition, new_true_result, new_false_result));
 }
 
 void AwaitTransformer::VisitArgumentListNode(ArgumentListNode* node) {
-  ArgumentListNode* new_args = new (Z) ArgumentListNode(node->token_pos());
+  ArgumentListNode* new_args =
+      new (Z) ArgumentListNode(node->token_pos(), node->type_arguments());
   for (intptr_t i = 0; i < node->length(); i++) {
     new_args->Add(Transform(node->NodeAt(i)));
   }
   new_args->set_names(node->names());
   result_ = new_args;
 }
 
 void AwaitTransformer::VisitArrayNode(ArrayNode* node) {
   GrowableArray<AstNode*> new_elements;
   for (intptr_t i = 0; i < node->length(); i++) {
@@ skipping 160 matching lines @@
 
 void AwaitTransformer::VisitThrowNode(ThrowNode* node) {
   AstNode* new_exception = Transform(node->exception());
   result_ = MakeName(
       new (Z) ThrowNode(node->token_pos(), new_exception, node->stacktrace()));
 }
 
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)