[mb] Add presubmit checks

infra/mb/PRESUBMIT.py

Index: infra/mb/PRESUBMIT.py
diff --git a/infra/mb/PRESUBMIT.py b/infra/mb/PRESUBMIT.py
new file mode 100644
index 0000000000000000000000000000000000000000..39d15e80b43ff3b1036bd1742ef69033836b3b89
--- /dev/null
+++ b/infra/mb/PRESUBMIT.py
@@ -0,0 +1,35 @@
+# Copyright 2016 the V8 project authors. All rights reserved.

[Michael Achenbach, 2016/06/17 08:23:07]

Shamelessly copied from webrtc. Thanks for the hint Henrik!

Usually we keep the original copyright header and add one line about v8. Not
sure if really needed within the chromium community.

[kjellander_chromium, 2016/06/17 08:25:21]

Happy to help! It has caught several errors I've made already.

+# Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+
+def _CommonChecks(input_api, output_api):
+  results = []
+
+  # Validate the format of the mb_config.pyl file.
+  mb_script = input_api.os_path.join(input_api.PresubmitLocalPath(), '..',
+                                     '..', 'tools', 'mb', 'mb.py')
+  mb_config_path = input_api.os_path.join(input_api.PresubmitLocalPath(),
+                                          'mb_config.pyl')
+  cmd = [input_api.python_executable, mb_script, 'validate', '--config-file',
+         mb_config_path]
+  kwargs = {'cwd': input_api.PresubmitLocalPath()}
+  results.extend(input_api.RunTests([
+      input_api.Command(name='mb_validate',
+                        cmd=cmd, kwargs=kwargs,
+                        message=output_api.PresubmitError)]))
+
+  return results
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  return _CommonChecks(input_api, output_api)
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  return _CommonChecks(input_api, output_api)