Proposal: Add YAML file with VM patch file information.

tools/yaml2json.py

+#!/usr/bin/env python
+# Copyright (c) 2017, 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 os
+import subprocess
+import sys
+
+import utils
+
+def Main():
+  args = sys.argv[1:]
+  yaml2json_dart = os.path.relpath(
+    os.path.join(os.path.dirname(__file__), "yaml2json.dart"))
+  command = [utils.CheckedInSdkExecutable(), yaml2json_dart] + args
+
+  with utils.CoreDumpArchiver(args):
+    exit_code = subprocess.call(command)
+
+  utils.DiagnoseExitCode(exit_code, command)
+  return exit_code
+
+
+if __name__ == '__main__':
+  sys.exit(Main())