VM: [Kernel] Switch to DFE for testing -c dartk configuration.

runtime/vm/kernel_isolate.cc

 // Copyright (c) 2016, 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/kernel_isolate.h"
 
 #include "vm/compiler.h"
 #include "include/dart_native_api.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
@@ skipping 362 matching lines @@
     KernelCompilationRequest* rq = FindRequestLocked(port);
     if (rq == NULL) {
       return;
     }
     rq->HandleResponseImpl(message);
   }
 
   static void RegisterRequest(KernelCompilationRequest* rq) {
     MonitorLocker locker(requests_monitor_);
     rq->next_ = requests_;
+    if (requests_ != NULL) {
+      requests_->prev_ = rq;
+    }
     requests_ = rq;
   }
 
   static void UnregisterRequest(KernelCompilationRequest* rq) {
     MonitorLocker locker(requests_monitor_);
     if (rq->next_ != NULL) {
       rq->next_->prev_ = rq->prev_;
     }
     if (rq->prev_ != NULL) {
       rq->prev_->next_ = rq->next_;
@@ skipping 45 matching lines @@
   }
 
   KernelCompilationRequest request;
   return request.SendAndWaitForResponse(kernel_port, script_uri);
 }
 
 
 #endif  // DART_PRECOMPILED_RUNTIME
 
 }  // namespace dart