Delete webrtc::VideoFrame methods buffer and stride.

webrtc/media/engine/webrtcvideoengine2.cc

Index: webrtc/media/engine/webrtcvideoengine2.cc
diff --git a/webrtc/media/engine/webrtcvideoengine2.cc b/webrtc/media/engine/webrtcvideoengine2.cc
index 4914d9f51d8c07c31c9b3eaa408b88374b7b12dd..5c670d98432b7fbf00c4ae84a8243c8f176b8674 100644
--- a/webrtc/media/engine/webrtcvideoengine2.cc
+++ b/webrtc/media/engine/webrtcvideoengine2.cc
@@ -1548,11 +1548,11 @@ static void CreateBlackFrame(webrtc::VideoFrame* video_frame,
                              webrtc::VideoRotation rotation) {
   video_frame->CreateEmptyFrame(width, height, width, (width + 1) / 2,
                                 (width + 1) / 2);
-  memset(video_frame->buffer(webrtc::kYPlane), 16,
+  memset(video_frame->video_frame_buffer()->MutableDataY(), 16,
          video_frame->allocated_size(webrtc::kYPlane));
-  memset(video_frame->buffer(webrtc::kUPlane), 128,
+  memset(video_frame->video_frame_buffer()->MutableDataU(), 128,
          video_frame->allocated_size(webrtc::kUPlane));
-  memset(video_frame->buffer(webrtc::kVPlane), 128,
+  memset(video_frame->video_frame_buffer()->MutableDataV(), 128,
          video_frame->allocated_size(webrtc::kVPlane));
   video_frame->set_rotation(rotation);
 }