rtc_stats: Update code to remove chromium style warnings suppression.

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 6ff9f9949a4fa2e862d38fd1b1b086a86d571395..f816d48b55e62c5a9783b3fd35dcda10979b3eac 100644
--- a/webrtc/api/stats/rtcstats_objects.h
+++ b/webrtc/api/stats/rtcstats_objects.h
@@ -20,14 +20,12 @@ namespace webrtc {
 // https://w3c.github.io/webrtc-stats/#certificatestats-dict*
 class RTCCertificateStats : public RTCStats {
  public:
+  WEBRTC_RTCSTATS_DECL();
+
   RTCCertificateStats(const std::string& id, int64_t timestamp_us);
   RTCCertificateStats(std::string&& id, int64_t timestamp_us);
-
-  WEBRTC_RTCSTATS_IMPL(RTCStats, RTCCertificateStats,
-      &fingerprint,
-      &fingerprint_algorithm,
-      &base64_certificate,
-      &issuer_certificate_id);
+  RTCCertificateStats(const RTCCertificateStats& other);
+  ~RTCCertificateStats() override;
 
   RTCStatsMember<std::string> fingerprint;
   RTCStatsMember<std::string> fingerprint_algorithm;
@@ -39,12 +37,12 @@ class RTCCertificateStats : public RTCStats {
 // TODO(hbos): Tracking bug crbug.com/636818
 class RTCPeerConnectionStats : public RTCStats {
  public:
+  WEBRTC_RTCSTATS_DECL();
+
   RTCPeerConnectionStats(const std::string& id, int64_t timestamp_us);
   RTCPeerConnectionStats(std::string&& id, int64_t timestamp_us);
-
-  WEBRTC_RTCSTATS_IMPL(RTCStats, RTCPeerConnectionStats,
-      &data_channels_opened,
-      &data_channels_closed);
+  RTCPeerConnectionStats(const RTCPeerConnectionStats& other);
+  ~RTCPeerConnectionStats() override;
 
   RTCStatsMember<uint32_t> data_channels_opened;
   RTCStatsMember<uint32_t> data_channels_closed;