message: C++ style: We don't allow designated initializers
  Cr-Commit-Position: refs/heads/master@{#31419}
diff: @@ -31,6 +31,10 @@ WebRTC is written in C++14, but with some restrictions:
  [chromium-cpp]: https://chromium-cpp.appspot.com/
  +Unlike the Chromium and Google C++ style guides, we do not allow C++20-style
  +designated initializers, because we want to stay compatible with compilers that
  +do not yet support them.
  +
  ### Abseil
  You may use a subset of the utilities provided by the [Abseil][abseil]
  