Return failure result from dartium buildbot_annotated_steps

tools/dartium/buildbot_annotated_steps.py

Index: tools/dartium/buildbot_annotated_steps.py
diff --git a/tools/dartium/buildbot_annotated_steps.py b/tools/dartium/buildbot_annotated_steps.py
index 0f69c1f88ff355d8d04db85c770d1a128ccf2e2f..f8eeb23682a9a0067ae8c71b5dd929172ba27f67 100755
--- a/tools/dartium/buildbot_annotated_steps.py
+++ b/tools/dartium/buildbot_annotated_steps.py
@@ -116,6 +116,7 @@ def main():
   # successful.
   if result == 0 and info.channel == 'be':
     result = upload_steps.ArchiveAndUpload(info, archive_latest=True) or result
+  return result
 
 if __name__ == '__main__':
   sys.exit(main())