Linux create_sdk GN build for host

utils/dartfmt/BUILD.gn

Index: utils/dartfmt/BUILD.gn
diff --git a/utils/dartfmt/BUILD.gn b/utils/dartfmt/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..7e79c9e1a0e773362e070b79b6318887580aee29
--- /dev/null
+++ b/utils/dartfmt/BUILD.gn
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+# 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.
+
+import("../invoke_dart.gni")
+
+application_snapshot("dartfmt") {
+  main_dart = "../../third_party/pkg_tested/dart_style/bin/format.dart"
+  inputs = exec_script("../../tools/list_files.py",
+                       ["\\.dart\$",
+                       rebase_path("../../third_party/pkg_tested/dart_style")],
+                       "list lines")
+}