DO NOT SUBMIT, call node from GN.

third_party/node/run_node.gni

+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+template("nodejs") {
+  action(target_name) {
+    script = "//third_party/node/run_node.py"
+    node_script = rebase_path(invoker.script, root_build_dir)
+    outputs = [ "$target_gen_dir/${invoker.script}.txt" ]
+
+
+    # Note that we have to manually pass the sources to our script if the
+    # script needs them as inputs.
+    args = [node_script] + [rebase_path(target_gen_dir, root_build_dir)]
+  }
+}