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

webrtc/common_video/libyuv/include/webrtc_libyuv.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 112 matching lines @@
                int src_width, int src_height,
                uint8_t* dst_y, int dst_stride_y,
                uint8_t* dst_uv, int dst_stride_uv,
                int dst_width, int dst_height);
 
 // Helper class for directly converting and scaling NV12 to I420. The Y-plane
 // will be scaled directly to the I420 destination, which makes this faster
 // than separate NV12->I420 + I420->I420 scaling.
 class NV12ToI420Scaler {
  public:
+  NV12ToI420Scaler();
+  ~NV12ToI420Scaler();
   void 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);
  private:
   std::vector<uint8_t> tmp_uv_planes_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_COMMON_VIDEO_LIBYUV_INCLUDE_WEBRTC_LIBYUV_H_