Remove source file writer from VideoProcessor.

webrtc/modules/video_coding/codecs/test/videoprocessor_unittest.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 41 matching lines @@
     config_.codec_settings->height = kHeight;
     config_.codec_settings->maxFramerate = kFramerate;
 
     EXPECT_CALL(frame_reader_mock_, NumberOfFrames())
         .WillRepeatedly(Return(kNumFrames));
     EXPECT_CALL(frame_reader_mock_, FrameLength())
         .WillRepeatedly(Return(kFrameSize));
     video_processor_ = rtc::MakeUnique<VideoProcessor>(
         &encoder_mock_, &decoder_mock_, &frame_reader_mock_,
         &frame_writer_mock_, &packet_manipulator_mock_, config_, &stats_,
-        nullptr /* source_frame_writer */, nullptr /* encoded_frame_writer */,
-        nullptr /* decoded_frame_writer */);
+        nullptr /* encoded_frame_writer */, nullptr /* decoded_frame_writer */);
   }
 
   void ExpectInit() {
     EXPECT_CALL(encoder_mock_, InitEncode(_, _, _)).Times(1);
     EXPECT_CALL(encoder_mock_, RegisterEncodeCompleteCallback(_))
         .Times(AtLeast(1));
     EXPECT_CALL(decoder_mock_, InitDecode(_, _)).Times(1);
     EXPECT_CALL(decoder_mock_, RegisterDecodeCompleteCallback(_))
         .Times(AtLeast(1));
   }
@@ skipping 28 matching lines @@
 
   EXPECT_CALL(encoder_mock_, Encode(testing::Property(&VideoFrame::timestamp,
                                                       2 * 90000 / kFramerate),
                                     _, _))
       .Times(1);
   video_processor_->ProcessFrame(1);
 }
 
 }  // namespace test
 }  // namespace webrtc