Delete RtcpStatisticsCallback from ReceiveStatistics

Update VideoReceiveStream::GetStats to use
StreamStatistician::GetStatistics instead, similarly to the audio
receiver.

Bug: webrtc:10679
Change-Id: I8a701e8a8e921c87895424362dc83500737c916d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/142233
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28793}

modules/rtp_rtcp/include/receive_statistics.h

@@ -61,9 +61,14 @@ class ReceiveStatistics : public ReceiveStatisticsProvider,
   ~ReceiveStatistics() override = default;
 
   static ReceiveStatistics* Create(Clock* clock) {
-    return Create(clock, nullptr, nullptr).release();
+    return Create(clock, nullptr).release();
   }
 
+  static std::unique_ptr<ReceiveStatistics> Create(
+      Clock* clock,
+      StreamDataCountersCallback* rtp_callback);
+
+  RTC_DEPRECATED
   static std::unique_ptr<ReceiveStatistics> Create(
       Clock* clock,
       RtcpStatisticsCallback* rtcp_callback,