Use backticks not vertical bars to denote variables in comments for /api

Bug: webrtc:12338
Change-Id: Ib97b2c3d64dbd895f261ffa76a2e885bd934a87f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/226940
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34554}
diff --git a/api/test/video_quality_analyzer_interface.h b/api/test/video_quality_analyzer_interface.h
index 4488e5a..c8c7094 100644
--- a/api/test/video_quality_analyzer_interface.h
+++ b/api/test/video_quality_analyzer_interface.h
@@ -72,9 +72,9 @@
   ~VideoQualityAnalyzerInterface() override = default;
 
   // Will be called by framework before test.
-  // |test_case_name| is name of test case, that should be used to report all
+  // `test_case_name` is name of test case, that should be used to report all
   // video metrics.
-  // |threads_count| is number of threads that analyzer can use for heavy
+  // `threads_count` is number of threads that analyzer can use for heavy
   // calculations. Analyzer can perform simple calculations on the calling
   // thread in each method, but should remember, that it is the same thread,
   // that is used in video pipeline.
@@ -83,57 +83,57 @@
                      int max_threads_count) {}
 
   // Will be called when frame was generated from the input stream.
-  // |peer_name| is name of the peer on which side frame was captured.
+  // `peer_name` is name of the peer on which side frame was captured.
   // Returns frame id, that will be set by framework to the frame.
   virtual uint16_t OnFrameCaptured(absl::string_view peer_name,
                                    const std::string& stream_label,
                                    const VideoFrame& frame) = 0;
   // Will be called before calling the encoder.
-  // |peer_name| is name of the peer on which side frame came to encoder.
+  // `peer_name` is name of the peer on which side frame came to encoder.
   virtual void OnFramePreEncode(absl::string_view peer_name,
                                 const VideoFrame& frame) {}
   // Will be called for each EncodedImage received from encoder. Single
   // VideoFrame can produce multiple EncodedImages. Each encoded image will
   // have id from VideoFrame.
-  // |peer_name| is name of the peer on which side frame was encoded.
+  // `peer_name` is name of the peer on which side frame was encoded.
   virtual void OnFrameEncoded(absl::string_view peer_name,
                               uint16_t frame_id,
                               const EncodedImage& encoded_image,
                               const EncoderStats& stats) {}
   // Will be called for each frame dropped by encoder.
-  // |peer_name| is name of the peer on which side frame drop was detected.
+  // `peer_name` is name of the peer on which side frame drop was detected.
   virtual void OnFrameDropped(absl::string_view peer_name,
                               EncodedImageCallback::DropReason reason) {}
   // Will be called before calling the decoder.
-  // |peer_name| is name of the peer on which side frame was received.
+  // `peer_name` is name of the peer on which side frame was received.
   virtual void OnFramePreDecode(absl::string_view peer_name,
                                 uint16_t frame_id,
                                 const EncodedImage& encoded_image) {}
   // Will be called after decoding the frame.
-  // |peer_name| is name of the peer on which side frame was decoded.
+  // `peer_name` is name of the peer on which side frame was decoded.
   virtual void OnFrameDecoded(absl::string_view peer_name,
                               const VideoFrame& frame,
                               const DecoderStats& stats) {}
   // Will be called when frame will be obtained from PeerConnection stack.
-  // |peer_name| is name of the peer on which side frame was rendered.
+  // `peer_name` is name of the peer on which side frame was rendered.
   virtual void OnFrameRendered(absl::string_view peer_name,
                                const VideoFrame& frame) {}
   // Will be called if encoder return not WEBRTC_VIDEO_CODEC_OK.
   // All available codes are listed in
   // modules/video_coding/include/video_error_codes.h
-  // |peer_name| is name of the peer on which side error acquired.
+  // `peer_name` is name of the peer on which side error acquired.
   virtual void OnEncoderError(absl::string_view peer_name,
                               const VideoFrame& frame,
                               int32_t error_code) {}
   // Will be called if decoder return not WEBRTC_VIDEO_CODEC_OK.
   // All available codes are listed in
   // modules/video_coding/include/video_error_codes.h
-  // |peer_name| is name of the peer on which side error acquired.
+  // `peer_name` is name of the peer on which side error acquired.
   virtual void OnDecoderError(absl::string_view peer_name,
                               uint16_t frame_id,
                               int32_t error_code) {}
   // Will be called every time new stats reports are available for the
-  // Peer Connection identified by |pc_label|.
+  // Peer Connection identified by `pc_label`.
   void OnStatsReports(
       absl::string_view pc_label,
       const rtc::scoped_refptr<const RTCStatsReport>& report) override {}