Revert of Unify rtcp packet setters

webrtc/modules/rtp_rtcp/source/rtcp_packet/voip_metric_unittest.cc

 /*
  *  Copyright (c) 2015 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 33 matching lines @@
   metric.Gmin = 8;
   metric.Rfactor = 9;
   metric.extRfactor = 10;
   metric.MOSLQ = 11;
   metric.MOSCQ = 12;
   metric.RXconfig = 13;
   metric.JBnominal = 0x5556;
   metric.JBmax = 0x6667;
   metric.JBabsMax = 0x7778;
   VoipMetric metric_block;
-  metric_block.SetMediaSsrc(kRemoteSsrc);
-  metric_block.SetVoipMetric(metric);
+  metric_block.To(kRemoteSsrc);
+  metric_block.WithVoipMetric(metric);
 
   metric_block.Create(buffer);
   EXPECT_EQ(0, memcmp(buffer, kBlock, kBlockSizeBytes));
 }
 
 TEST(RtcpPacketVoipMetricTest, Parse) {
   VoipMetric read_metric;
   read_metric.Parse(kBlock);
 
   // Run checks on const object to ensure all accessors have const modifier.
@@ skipping 18 matching lines @@
   EXPECT_EQ(12, parsed.voip_metric().MOSCQ);
   EXPECT_EQ(13, parsed.voip_metric().RXconfig);
   EXPECT_EQ(0x5556, parsed.voip_metric().JBnominal);
   EXPECT_EQ(0x6667, parsed.voip_metric().JBmax);
   EXPECT_EQ(0x7778, parsed.voip_metric().JBabsMax);
 }
 
 }  // namespace
 }  // namespace rtcp
 }  // namespace webrtc