Revert of Delete webrtc::VideoFrame methods buffer and stride.

webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_encoder.cc

 /*
  *  Copyright (c) 2015 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 150 matching lines @@
     return false;
   }
   uint8_t* dst_y = reinterpret_cast<uint8_t*>(
       CVPixelBufferGetBaseAddressOfPlane(pixel_buffer, 0));
   int dst_stride_y = CVPixelBufferGetBytesPerRowOfPlane(pixel_buffer, 0);
   uint8_t* dst_uv = reinterpret_cast<uint8_t*>(
       CVPixelBufferGetBaseAddressOfPlane(pixel_buffer, 1));
   int dst_stride_uv = CVPixelBufferGetBytesPerRowOfPlane(pixel_buffer, 1);
   // Convert I420 to NV12.
   int ret = libyuv::I420ToNV12(
-      frame.video_frame_buffer()->DataY(),
-      frame.video_frame_buffer()->StrideY(),
-      frame.video_frame_buffer()->DataU(),
-      frame.video_frame_buffer()->StrideU(),
-      frame.video_frame_buffer()->DataV(),
-      frame.video_frame_buffer()->StrideV(),
-      dst_y, dst_stride_y, dst_uv, dst_stride_uv,
-      frame.width(), frame.height());
+      frame.buffer(webrtc::kYPlane), frame.stride(webrtc::kYPlane),
+      frame.buffer(webrtc::kUPlane), frame.stride(webrtc::kUPlane),
+      frame.buffer(webrtc::kVPlane), frame.stride(webrtc::kVPlane), dst_y,
+      dst_stride_y, dst_uv, dst_stride_uv, frame.width(), frame.height());
   CVPixelBufferUnlockBaseAddress(pixel_buffer, 0);
   if (ret) {
     LOG(LS_ERROR) << "Error converting I420 VideoFrame to NV12 :" << ret;
     return false;
   }
   return true;
 }
 
 // This is the callback function that VideoToolbox calls when encode is
 // complete. From inspection this happens on its own queue.
@@ skipping 341 matching lines @@
   if (result != 0) {
     LOG(LS_ERROR) << "Encode callback failed: " << result;
     return;
   }
   bitrate_adjuster_.Update(frame._size);
 }
 
 }  // namespace webrtc
 
 #endif  // defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)