Only one implementation of MockRtpPacketSink once

webrtc/call/rtx_receive_stream_unittest.cc

 /*
  *  Copyright (c) 2017 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/call/rtp_packet_sink_interface_mock.h"
 #include "webrtc/call/rtx_receive_stream.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_header_extension_map.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_packet_received.h"
 #include "webrtc/test/gmock.h"
 #include "webrtc/test/gtest.h"
 
 namespace webrtc {
 
 namespace {
 
 using ::testing::_;
 using ::testing::StrictMock;
 
-class MockRtpPacketSink : public RtpPacketSinkInterface {
- public:
-  MOCK_METHOD1(OnRtpPacket, void(const RtpPacketReceived&));
-};
-
 constexpr int kMediaPayloadType = 100;
 constexpr int kRtxPayloadType = 98;
 constexpr uint32_t kMediaSSRC = 0x3333333;
 constexpr uint16_t kMediaSeqno = 0x5657;
 
 constexpr uint8_t kRtxPacket[] = {
     0x80,                    // Version 2.
     98,                      // Payload type.
     0x12, 0x34,              // Seqno.
     0x11, 0x11, 0x11, 0x11,  // Timestamp.
@@ skipping 86 matching lines @@
         EXPECT_THAT(packet.payload(), testing::ElementsAre(0xee));
         VideoRotation rotation = kVideoRotation_0;
         EXPECT_TRUE(packet.GetExtension<VideoOrientation>(&rotation));
         EXPECT_EQ(rotation, kVideoRotation_90);
       }));
 
   rtx_sink.OnRtpPacket(rtx_packet);
 }
 
 }  // namespace webrtc