Refactor and clean-up relating to RTCCodecStats.

webrtc/api/stats/rtcstats_objects.h

Index: webrtc/api/stats/rtcstats_objects.h
diff --git a/webrtc/api/stats/rtcstats_objects.h b/webrtc/api/stats/rtcstats_objects.h
index ac00386370d04b5f7f4d3973d45b596c96ae7aa3..6c24d67b63fb894cedee6540d2a72b1d695454a9 100644
--- a/webrtc/api/stats/rtcstats_objects.h
+++ b/webrtc/api/stats/rtcstats_objects.h
@@ -77,9 +77,6 @@ class RTCCertificateStats final : public RTCStats {
 };
 
 // https://w3c.github.io/webrtc-stats/#codec-dict*
-// Tracking bug crbug.com/659117
-// TODO(hbos): The present codec ID assignment is not sufficient to support
-// Unified Plan or unbundled connections in all cases. crbug.com/659117
 class RTCCodecStats final : public RTCStats {
  public:
   WEBRTC_RTCSTATS_DECL();
@@ -92,11 +89,11 @@ class RTCCodecStats final : public RTCStats {
   RTCStatsMember<uint32_t> payload_type;
   RTCStatsMember<std::string> codec;
   RTCStatsMember<uint32_t> clock_rate;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659117
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7061
   RTCStatsMember<uint32_t> channels;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659117
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7061
   RTCStatsMember<std::string> parameters;
-  // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659117
+  // TODO(hbos): Collect and populate this value. https://bugs.webrtc.org/7061
   RTCStatsMember<std::string> implementation;
 };