message: Use backticks not vertical bars to denote variables in comments for /modules/async_audio_processing
  Cr-Commit-Position: refs/heads/master@{#34625}
diff: @@ -53,16 +53,16 @@ class AsyncAudioProcessing final {
  ~AsyncAudioProcessing();
  // Creates AsyncAudioProcessing which will pass audio frames to
  - // |frame_processor| on |task_queue_| and reply with processed frames passed
  - // into |on_frame_processed_callback|, which is posted back onto
  - // |task_queue_|. |task_queue_| is created using the provided
  - // |task_queue_factory|.
  + // `frame_processor` on `task_queue_` and reply with processed frames passed
  + // into `on_frame_processed_callback`, which is posted back onto
  + // `task_queue_`. `task_queue_` is created using the provided
  + // `task_queue_factory`.
  AsyncAudioProcessing(
  AudioFrameProcessor& frame_processor,
  TaskQueueFactory& task_queue_factory,
  AudioFrameProcessor::OnAudioFrameCallback on_frame_processed_callback);
  - // Accepts |frame| for asynchronous processing. Thread-safe.
  + // Accepts `frame` for asynchronous processing. Thread-safe.
  void Process(std::unique_ptr<AudioFrame> frame);
  private:
  