replace NtpTime->Clock with Clock->NtpTime dependency

webrtc/modules/rtp_rtcp/source/rtcp_sender.cc

 /*
  *  Copyright (c) 2012 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 761 matching lines @@
         // Not allowed to send any RTCP packet without sender report.
         return -1;
       }
     }
 
     if (packet_type_counter_.first_packet_time_ms == -1)
       packet_type_counter_.first_packet_time_ms = clock_->TimeInMilliseconds();
 
     // We need to send our NTP even if we haven't received any reports.
     RtcpContext context(feedback_state, nack_size, nack_list, pictureID,
-                        NtpTime(*clock_));
+                        clock_->CurrentNtpTime());
 
     PrepareReport(feedback_state);
 
     std::unique_ptr<rtcp::RtcpPacket> packet_bye;
 
     auto it = report_flags_.begin();
     while (it != report_flags_.end()) {
       auto builder_it = builders_.find(it->type);
       RTC_DCHECK(builder_it != builders_.end())
           << "Could not find builder for packet type " << it->type;
@@ skipping 256 matching lines @@
       return false;
   }
 
   RTC_DCHECK_LE(max_packet_size_, IP_PACKET_SIZE);
   uint8_t buffer[IP_PACKET_SIZE];
   return packet.BuildExternalBuffer(buffer, max_packet_size_, &sender) &&
          !sender.send_failure_;
 }
 
 }  // namespace webrtc