Remove channel ids from various interfaces.

webrtc/modules/rtp_rtcp/test/testAPI/test_api.h

 /*
  *  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 17 matching lines @@
       : count_(0),
         packet_loss_(0),
         rtp_payload_registry_(NULL),
         rtp_receiver_(NULL),
         rtp_rtcp_module_(NULL) {}
   void SetSendModule(RtpRtcp* rtp_rtcp_module,
                      RTPPayloadRegistry* payload_registry,
                      RtpReceiver* receiver,
                      ReceiveStatistics* receive_statistics);
   void DropEveryNthPacket(int n);
-  int SendPacket(int channel, const void* data, size_t len) override;
-  int SendRTCPPacket(int channel, const void* data, size_t len) override;
+  int SendPacket(const void* data, size_t len) override;
+  int SendRTCPPacket(const void* data, size_t len) override;
 
  private:
   int count_;
   int packet_loss_;
   ReceiveStatistics* receive_statistics_;
   RTPPayloadRegistry* rtp_payload_registry_;
   RtpReceiver* rtp_receiver_;
   RtpRtcp* rtp_rtcp_module_;
 };
 
 class TestRtpReceiver : public NullRtpData {
  public:
   int32_t OnReceivedPayloadData(
       const uint8_t* payload_data,
       const size_t payload_size,
       const webrtc::WebRtcRTPHeader* rtp_header) override;
 
   const uint8_t* payload_data() const { return payload_data_; }
   size_t payload_size() const { return payload_size_; }
   webrtc::WebRtcRTPHeader rtp_header() const { return rtp_header_; }
 
  private:
   uint8_t payload_data_[1500];
   size_t payload_size_;
   webrtc::WebRtcRTPHeader rtp_header_;
 };
 
 }  // namespace webrtc