Revert of Unify rtcp packet setters

webrtc/modules/rtp_rtcp/source/rtcp_packet/rrtr_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 12 matching lines @@
                           0x12, 0x34, 0x56, 0x78,
                           0x23, 0x45, 0x67, 0x89};
 const size_t kBlockSizeBytes = sizeof(kBlock);
 static_assert(
     kBlockSizeBytes == Rrtr::kLength,
     "Size of manually created Rrtr block should match class constant");
 
 TEST(RtcpPacketRrtrTest, Create) {
   uint8_t buffer[Rrtr::kLength];
   Rrtr rrtr;
-  rrtr.SetNtp(NtpTime(kNtpSec, kNtpFrac));
+  rrtr.WithNtp(NtpTime(kNtpSec, kNtpFrac));
 
   rrtr.Create(buffer);
   EXPECT_EQ(0, memcmp(buffer, kBlock, kBlockSizeBytes));
 }
 
 TEST(RtcpPacketRrtrTest, Parse) {
   Rrtr read_rrtr;
   read_rrtr.Parse(kBlock);
 
   // Run checks on const object to ensure all accessors have const modifier.
   const Rrtr& parsed = read_rrtr;
 
   EXPECT_EQ(kNtpSec, parsed.ntp().seconds());
   EXPECT_EQ(kNtpFrac, parsed.ntp().fractions());
 }
 
 }  // namespace
 }  // namespace webrtc