message: Add guidance to style guide how to reference a bug in a TODO
  No-Try: True
  Cr-Commit-Position: refs/heads/master@{#30058}
diff: @@ -61,6 +61,16 @@ declare.
  [Examples and exceptions](style-guide/h-cc-pairs.md).
  +### TODO comments
  +
  +Follow the [Google style][goog-style-todo]. When referencing a WebRTC bug,
  +prefer the url form, e.g.
  +```
  +// TODO(bugs.webrtc.org/12345): Delete the hack when blocking bugs are resolved.
  +```
  +
  +[goog-style-todo]: https://google.github.io/styleguide/cppguide.html#TODO_Comments
  +
  ### ArrayView
  When passing an array of values to a function, use `rtc::ArrayView`
  