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

tools/dartk_wrappers/dfe_worker

Index: tools/dartk_wrappers/dfe_worker
diff --git a/tools/dartk_wrappers/dfe_worker b/tools/dartk_wrappers/dfe_worker
new file mode 100755
index 0000000000000000000000000000000000000000..a794c0e47b7ce926e428cbb348e09d76af8ee4bf
--- /dev/null
+++ b/tools/dartk_wrappers/dfe_worker
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash

[kustermann, 2017/01/31 15:39:00]

You can get rid of this file

+# 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.
+
+# Unlike $0, $BASH_SOURCE points to the absolute path of this file.
+PROG_NAME="$BASH_SOURCE"
+WRAPPERS_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
+DART_ROOT="$(cd "${WRAPPERS_DIR}/../.." ; pwd -P)"
+DARTK="$DART_ROOT/runtime/tools/kernel-service.dart"
+
+if [[ `uname` == 'Darwin' ]];
+then
+  DART="$DART_ROOT/tools/sdks/mac/dart-sdk/bin/dart"
+else
+  DART="$DART_ROOT/tools/sdks/linux/dart-sdk/bin/dart"
+fi
+
+exec "$DART" "$DARTK" "--batch"