[test] Automatically add a noi18n bot for changes affecting Intl

Change-Id: Ibd0cfc0c03b94ed6e15c6496cf16d9059447467c
Reviewed-on: https://chromium-review.googlesource.com/525472Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45729}

PRESUBMIT.py

@@ -353,3 +353,19 @@ def CheckChangeOnCommit(input_api, output_api):
         input_api, output_api,
         json_url='http://v8-status.appspot.com/current?format=json'))
   return results
+
+def PostUploadHook(cl, change, output_api):
+  """git cl upload will call this hook after the issue is created/modified.
+
+  This hook adds a noi18n bot if the patch affects Intl.
+  """
+  def affects_intl(f):
+    return 'intl' in f.LocalPath() or 'test262' in f.LocalPath()
+  if not change.AffectedFiles(file_filter=affects_intl):
+    return []
+  return output_api.EnsureCQIncludeTrybotsAreAdded(
+      cl,
+      [
+        'master.tryserver.v8:v8_linux_noi18n_rel_ng'
+      ],
+      'Automatically added noi18n trybots to run tests on CQ.')