Revert "Update includes for webrtc/{base => rtc_base} rename (1/3)"

webrtc/modules/rtp_rtcp/source/rtcp_packet/rrtr.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.
  */
 
 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/rrtr.h"
 
+#include "webrtc/base/checks.h"
 #include "webrtc/modules/rtp_rtcp/source/byte_io.h"
-#include "webrtc/rtc_base/checks.h"
 
 namespace webrtc {
 namespace rtcp {
 // Receiver Reference Time Report Block (RFC 3611).
 //
 //   0                   1                   2                   3
 //   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 //  |     BT=4      |   reserved    |       block length = 2        |
 //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
@@ skipping 15 matching lines @@
   const uint8_t kReserved = 0;
   buffer[0] = kBlockType;
   buffer[1] = kReserved;
   ByteWriter<uint16_t>::WriteBigEndian(&buffer[2], kBlockLength);
   ByteWriter<uint32_t>::WriteBigEndian(&buffer[4], ntp_.seconds());
   ByteWriter<uint32_t>::WriteBigEndian(&buffer[8], ntp_.fractions());
 }
 
 }  // namespace rtcp
 }  // namespace webrtc