Revert of Move CoreVideoFrameBuffer from webrtc/common_video/ to webrtc/sdk/objc/

webrtc/common_video/libyuv/webrtc_libyuv.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 349 matching lines @@
                     dst_width, dst_height,
                     libyuv::kFilterBox);
 
   // Merge the UV planes into the destination.
   libyuv::MergeUVPlane(dst_u, dst_chroma_width,
                        dst_v, dst_chroma_width,
                        dst_uv, dst_stride_uv,
                        dst_chroma_width, dst_chroma_height);
 }
 
-NV12ToI420Scaler::NV12ToI420Scaler() = default;
-NV12ToI420Scaler::~NV12ToI420Scaler() = default;
-
 void NV12ToI420Scaler::NV12ToI420Scale(
     const uint8_t* src_y, int src_stride_y,
     const uint8_t* src_uv, int src_stride_uv,
     int src_width, int src_height,
     uint8_t* dst_y, int dst_stride_y,
     uint8_t* dst_u, int dst_stride_u,
     uint8_t* dst_v, int dst_stride_v,
     int dst_width, int dst_height) {
   if (src_width == dst_width && src_height == dst_height) {
     // No scaling.
@@ skipping 30 matching lines @@
                     src_v, src_uv_width,
                     src_width, src_height,
                     dst_y, dst_stride_y,
                     dst_u, dst_stride_u,
                     dst_v, dst_stride_v,
                     dst_width, dst_height,
                     libyuv::kFilterBox);
 }
 
 }  // namespace webrtc