Revert "Proper sequencing of _asyncStackTraceHelper in Kernel"

runtime/vm/parser.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED_RUNTIME
 
 #include "lib/invocation_mirror.h"
@@ skipping 7349 matching lines @@
       current_block_->scope->LookupVariable(Symbols::AsyncOperation(), false);
   ClosureNode* closure_obj = new (Z) ClosureNode(
       TokenPosition::kNoSource, closure_func, NULL, closure_body->scope());
   StoreLocalNode* store_async_op = new (Z)
       StoreLocalNode(TokenPosition::kNoSource, async_op_var, closure_obj);
 
   current_block_->statements->Add(store_async_op);
 
   if (FLAG_causal_async_stacks) {
     // Add to AST:
-    //   :async_stack_trace = _asyncStackTraceHelper(:async_op);
+    //   :async_stack_trace = _asyncStackTraceHelper();
     const Function& async_stack_trace_helper = Function::ZoneHandle(
         Z,
         async_lib.LookupFunctionAllowPrivate(Symbols::AsyncStackTraceHelper()));
     ASSERT(!async_stack_trace_helper.IsNull());
     ArgumentListNode* async_stack_trace_helper_args =
         new (Z) ArgumentListNode(TokenPosition::kNoSource);
     async_stack_trace_helper_args->Add(
         new (Z) LoadLocalNode(TokenPosition::kNoSource, async_op_var));
     StaticCallNode* async_stack_trace_helper_call = new (Z) StaticCallNode(
         token_pos, async_stack_trace_helper, async_stack_trace_helper_args);
@@ skipping 7932 matching lines @@
                                                 TokenPosition* start,
                                                 TokenPosition* end) {
   UNREACHABLE();
   return false;
 }
 
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED_RUNTIME