Revert of Delete deprecated and transitional stuff related to video frame refactoring.

webrtc/video/receive_statistics_proxy_unittest.cc

 /*
  *  Copyright 2016 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/video/receive_statistics_proxy.h"
 
 #include <memory>
 
-#include "webrtc/api/video/i420_buffer.h"
 #include "webrtc/api/video/video_frame.h"
 #include "webrtc/api/video/video_rotation.h"
 #include "webrtc/modules/video_coding/include/video_codec_interface.h"
 #include "webrtc/system_wrappers/include/metrics.h"
 #include "webrtc/system_wrappers/include/metrics_default.h"
 #include "webrtc/test/gtest.h"
 
 namespace webrtc {
 namespace {
 const int64_t kFreqOffsetProcessIntervalInMs = 40000;
@@ skipping 481 matching lines @@
                                   kJitterBufferMs));
   EXPECT_EQ(1,
             metrics::NumEvents("WebRTC.Video.TargetDelayInMs", kTargetDelayMs));
   EXPECT_EQ(
       1, metrics::NumEvents("WebRTC.Video.CurrentDelayInMs", kCurrentDelayMs));
   EXPECT_EQ(1,
             metrics::NumEvents("WebRTC.Video.OnewayDelayInMs", kTargetDelayMs));
 }
 
 }  // namespace webrtc