Delete webrtc::VideoFrame methods buffer and stride.

webrtc/modules/video_processing/video_processing_impl.cc

Index: webrtc/modules/video_processing/video_processing_impl.cc
diff --git a/webrtc/modules/video_processing/video_processing_impl.cc b/webrtc/modules/video_processing/video_processing_impl.cc
index f34886f10f22ca8361bc535d91041388976da300..e52a055f7ea160d019ee86c40804d29ebf3efb72 100644
--- a/webrtc/modules/video_processing/video_processing_impl.cc
+++ b/webrtc/modules/video_processing/video_processing_impl.cc
@@ -51,7 +51,7 @@ void VideoProcessing::GetFrameStats(const VideoFrame& frame,
   int height = frame.height();
   stats->sub_sampling_factor = GetSubSamplingFactor(width, height);
 
-  const uint8_t* buffer = frame.buffer(kYPlane);
+  const uint8_t* buffer = frame.video_frame_buffer()->DataY();
   // Compute histogram and sum of frame
   for (int i = 0; i < height; i += (1 << stats->sub_sampling_factor)) {
     int k = i * width;
@@ -98,7 +98,7 @@ void VideoProcessing::Brighten(int delta, VideoFrame* frame) {
     look_up[i] = ((((val < 0) ? 0 : val) > 255) ? 255 : val);
   }
 
-  uint8_t* temp_ptr = frame->buffer(kYPlane);
+  uint8_t* temp_ptr = frame->video_frame_buffer()->MutableDataY();
   for (int i = 0; i < num_pixels; i++) {
     *temp_ptr = static_cast<uint8_t>(look_up[*temp_ptr]);
     temp_ptr++;