RTCRTPStreamStats.ssrc changed type to uint32_t.

webrtc/api/stats/rtcstats_objects.h

 /*
  *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 284 matching lines @@
 
 // https://w3c.github.io/webrtc-stats/#streamstats-dict*
 // TODO(hbos): Tracking bug crbug.com/657854
 class RTCRTPStreamStats : public RTCStats {
  public:
   WEBRTC_RTCSTATS_DECL();
 
   RTCRTPStreamStats(const RTCRTPStreamStats& other);
   ~RTCRTPStreamStats() override;
 
-  RTCStatsMember<std::string> ssrc;
+  RTCStatsMember<uint32_t> ssrc;
   // TODO(hbos): When the remote case is supported |RTCStatsCollector| needs to
   // set this. crbug.com/657855, 657856
   RTCStatsMember<std::string> associate_stats_id;
   // TODO(hbos): Remote case not supported by |RTCStatsCollector|.
   // crbug.com/657855, 657856
   RTCStatsMember<bool> is_remote;  // = false
   RTCStatsMember<std::string> media_type;
   RTCStatsMember<std::string> track_id;
   RTCStatsMember<std::string> transport_id;
   RTCStatsMember<std::string> codec_id;
@@ skipping 93 matching lines @@
   // TODO(hbos): Support enum types? "RTCStatsMember<RTCDtlsTransportState>"?
   RTCStatsMember<std::string> dtls_state;
   RTCStatsMember<std::string> selected_candidate_pair_id;
   RTCStatsMember<std::string> local_certificate_id;
   RTCStatsMember<std::string> remote_certificate_id;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_STATS_RTCSTATS_OBJECTS_H_